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Malcolm Halcrow

Professor of Inorganic Chemistry
Member of the Crystallisation and Directed Assembly group

Contact details

Room: 1.26
Tel: +44 (0)113 3436506
Email: M.A.Halcrow@leeds.ac.uk

Keywords

Co-ordination Chemistry
Supramolecular Chemistry
Switchable Metal Complexes
Molecular Magnetochemistry
EPR Spectroscopy
Electrochemistry

Photograph of Malcolm Halcrow

Research interests

Spin-Crossover materials
Spin-crossover iron(II) complexes can switch reversibly between a pale-coloured, paramagnetic high-spin state to a dark-coloured, diamagnetic low-spin state. This transition can be induced by changing temperature, by laser irradiation or by some other physical stimulus. While the phenomenon has been known for seventy years, there is still intense worldwide interest in these thermochromic and photochromic switches, which have been used in display and memory devices. We are pursuing new spin-crossover materials with technologically favourable properties, and trying to elucidate the factors that control spin-transitions in the solid state. The latter depends on interactions between molecules in the solid as much as on the molecules themselves, and is therefore a problem of crystal engineering. We are also involved in interdisciplinary projects to incorporate spin-crossover centres onto surfaces, and into other types of functional material.

Mixed-Valent Radical Complexes
A new project for us, is to investigate metal complexes containing multiple redox-active organic ligand centres. An example of such a compound is cyclotricatechylene (CTC), which is a cyclic molecule with three covalently linked catecholate groups, that can each bind a metal ion. Platinum complexes of CTC exhibit three reversible low-potential oxidations in their cyclic voltammograms, corresponding to step-wise oxidation of its three catecholate groups to semiquinone radical centres. The 'mixed-valent' products, containing both oxidised and unoxidised CTC redox sites, are intensely coloured with strong visible and NIR absorptions. These reflect electron delocalisation around the ligand; the mechanism of this unusual delocalisation is something we are actively studying. Moreover, NIR-absorbers like these, whose absorptions can be switched on and off electronically, can be very useful in fibre-optic communications devices.

Manipulating Jahn-Teller Phenomena in Copper Chemistry
Several years ago, we discovered that the electronic structures of certain six-coordinate copper(II) complexes can be changed using sterically or conformationally restricted ligands. In this way, we produced the first true examples of molecular six-coordinate copper(II) compounds with axially compressed, rather than elongated, structures. Although other such compounds had been claimed previously, most of these were subsequently found to be crystallographic or spectroscopic artifacts. We have recently returned to this chemistry, to try and induce similar effects using more subtle physical triggers. We are aiming to produce an EPR-based sensor, where the Jahn-Teller structure of a copper reporter group is changed by a guest binding event.

Inorganic Supramolecular Chemistry
Pyrazole rings contain both Lewis basic (N: donor) and Lewis acidic (N-H donor) groups in close proximity to each other. We are interested in using pyrazole derivatives as ligands that coordinate to cations and anions at the same time; that is, as ligands for metal salts. On one hand, we can use hydrogen-bonding interactions between metal centres and anion guests to template unusual metal-organic network structures or cluster compounds. Alternatively, we can use pre-formed metal centres containing this type of functionality as supramolecular hosts for anions. Both aspects of this chemistry are being pursued.

Useful links

CV and Bibliography (PDF)   
Research (PDF)   
   

Publications

Kershaw Cook LJ; Thorp-Greenwood FL; Comyn TP; Cespedes O; Chastanet G; Halcrow MA Unexpected Spin-Crossover and a Low-Pressure Phase Change in an Iron(II)/Dipyrazolylpyridine Complex Exhibiting a High-Spin Jahn-Teller Distortion. Inorganic chemistry 54 6319-6330, 2015
DOI:10.1021/acs.inorgchem.5b00614
View abstract

Kershaw Cook LJ; Fisher J; Harding LP; Halcrow MA An iron(ii) spin-crossover metallacycle from a back-to-back bis-[dipyrazolylpyridine]. Dalton Transactions -, 2015
DOI:10.1039/c5dt00732a
View abstract

Santoro A; Lord RM; Loughrey JJ; McGowan PC; Halcrow MA; Henwood AF; Thomson C; Zysman-Colman E One-pot synthesis of highly emissive dipyridinium dihydrohelicenes Chemistry - A European Journal 21 7035-7038, 2015
DOI:10.1002/chem.201406255
View abstract

Kershaw Cook L; Mohammed R; Sherborne G; Roberts TD; Alvarez S; Halcrow MA Spin state behavior of iron(II)/dipyrazolylpyridine complexes. New insights from crystallographic and solution measurements Coordination Chemistry Reviews 289-290 2-12, 2015
DOI:10.1016/j.ccr.2014.08.006
View abstract

Cook LJK; Shepherd HJ; Comyn TP; Baldé C; Cespedes O; Chastanet G; Halcrow MA Decoupled spin crossover and structural phase transition in a molecular iron(II) complex Chemistry - A European Journal 21 4805-4816, 2015
DOI:10.1002/chem.201406307
View abstract

Kershaw Cook LJ; Halcrow MA Doping ruthenium complexes into a molecular spin-crossover material Polyhedron 87 91-97, 2015
DOI:10.1016/j.poly.2014.10.021
View abstract

Santoro A; Kershaw Cook LJ; Kulmaczewski R; Barrett SA; Cespedes O; Halcrow MA Iron(II) complexes of tridentate indazolylpyridine ligands: enhanced spin-crossover hysteresis and ligand-based fluorescence. Inorganic chemistry 54 682-693, 2015
DOI:10.1021/ic502726q
View abstract

Abdullah N; Noor NLM; Nordin AR; Halcrow MA; Macfarlane DR; Lazar MA; Pringle JM; Bruce DW; Donnio B; Heinrich B Spin-crossover, mesomorphic and thermoelectrical properties of cobalt(II) complexes with alkylated N3-Schiff bases Journal of Materials Chemistry C 3 2491-2499, 2015
DOI:10.1039/c4tc02923b
View abstract

Santoro A; Sambiagio C; McGowan PC; Halcrow MA Synthesis and coordination chemistry of 1,1,1-tris-(pyrid-2-yl)ethane Dalton Transactions 44 1060-1069, 2014
DOI:10.1039/c4dt02824d
View abstract

Kulmaczewski R; Shepherd HJ; Cespedes O; Halcrow MA A homologous series of [Fe(H₂Bpz₂)₂(L)] spin-crossover complexes with annelated bipyridyl co-ligands. Inorganic Chemistry: including bioinorganic chemistry 53 9809-9817, 2014
DOI:10.1021/ic501402q
View abstract

Elhaïk J; Kilner C; Halcrow MA Insight into structure: function relationships in a molecular spin-crossover crystal, from a related weakly cooperative compound European Journal of Inorganic Chemistry 2014 4250-4253, 2014
DOI:10.1002/ejic.201402623
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Loughrey J; Comyn TP; Apperley DC; Little M; Halcrow MA Complex thermal expansion properties in a molecular honeycomb lattice Chemical Communications 50 7601-7603, 2014
DOI:10.1039/c4cc02198c
View abstract

Roberts TD; Little M; Kershaw Cook L; Halcrow MA Iron(II) complexes of 2,6-di(1H-pyrazol-3-yl)-pyridine derivatives with hydrogen bonding and sterically bulky substituents. Dalton Transactions 43 7577-7588, 2014
DOI:10.1039/c4dt00355a
View abstract

Loughrey J; Sproules S; McInnes EJ; Hardie MJ; Halcrow MA Stable mixed-valent radicals from platinum(II) complexes of a bis(dioxolene) ligand. Chemistry - A European Journal 20 6272-6276, 2014
DOI:10.1002/chem.201304848
View abstract

Little M; Loughrey J; Santoro A; Halcrow MA; Hardie MJ Hexasulfanyl analogues of cyclotriveratrylene Tetrahedron Letters 55 2530-2533, 2014
DOI:10.1016/j.tetlet.2014.03.025
View abstract

Barrett SA; Halcrow MA Anion-dependent spin crossover in solution for an iron(ii) complex of a 1H-pyrazolyl ligand RSC Advances 4 11240-11243, 2014
DOI:10.1039/c4ra00230j
View abstract

Halcrow MA Recent advances in the synthesis and applications of 2,6- dipyrazolylpyridine derivatives and their complexes New Journal of Chemistry 38 1868-1882, 2014
DOI:10.1039/c3nj00835e
View abstract

Halcrow MA Spin-crossover compounds with wide thermal hysteresis Chemistry Letters 43 1178-1188, 2014
DOI:10.1246/cl.140464
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Halcrow MA The foundation of modern spin-crossover. Chemical Communications 49 10890-10892, 2013
DOI:10.1039/c3cc44171g
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Roberts TD; Little MA; Tuna F; Kilner CA; Halcrow MA Isostructural salts of the same complex showing contrasting thermal spin-crossover mediated by multiple phase changes. Chemical Communications 6280-6282, 2013
DOI:10.1039/c3cc43613f
View abstract

Halcrow MA Structure:function relationships in molecular spin-crossover materials In Spin-Crossover Materials , 2013
View abstract

King P; Henkelis JJ; Kilner CA; Halcrow MA Four new spin-crossover salts of [Fe(3-bpp)] (3-bpp = 2,6-bis[1H-pyrazol-3-yl]pyridine) Polyhedron 52 1449-1456, 2013
DOI:10.1016/j.poly.2012.03.038
View abstract

Halcrow MA Jahn-Teller distortions in transition metal compounds, and their importance in functional molecular and inorganic materials. Chemical Society Reviews 42 1784-1795, 2013
DOI:10.1039/c2cs35253b
View abstract

Little MA; Halcrow MA; Hardie MJ A bis(disulfide)-linked offset cryptophane. Chem Commun (Camb) 49 1512-1514, 2013
DOI:10.1039/c3cc38768b
View abstract

Cook LJ; Tuna F; Halcrow MA Iron(II) and cobalt(II) complexes of tris-azinyl analogues of 2,2':6',2''-terpyridine. Dalton Transactions 42 2254-2265, 2013
DOI:10.1039/c2dt31736b
View abstract

Nishi K; Kondo H; Fujinami T; Matsumoto N; Iijima S; Halcrow MA; Sunatsuki Y; Kojima M Stepwise spin transition and hysteresis of a tetrameric iron(II) complex, fac-[tris(2-methylimidazol-4-ylmethylidene-n-hexylamine)]iron(II) chloride hexafluorophosphate, assembled by imidazole···chloride hydrogen bonds European Journal of Inorganic Chemistry 927-933, 2013
DOI:10.1002/ejic.201201298
View abstract

Halcrow MA Preface In Spin-Crossover Materials: Properties and Applications , 2013
DOI:10.1002/9781118519301
View abstract

Roberts TD; Little MA; Kershaw Cook LJ; Barrett SA; Tuna F; Halcrow MA Iron(II) complexes of 2,6-di(1-alkylpyrazol-3-yl)pyridine derivatives - The influence of distal substituents on the spin state of the iron centre Polyhedron 64 4-12, 2013
DOI:10.1016/j.poly.2013.01.057
View abstract

Mohammed R; Malkin TL; Barrett SA; Kilner CA; Halcrow MA; Chastanet G; Létard J-F; Tuna F Synthesis of 2,6-Di(pyrazol-1-yl)pyrazine derivatives and the spin-state behavior of their iron(II) complexes European Journal of Inorganic Chemistry 819-831, 2013
DOI:10.1002/ejic.201201100
View abstract

Chastanet G; Tovee CA; Hyett G; Halcrow MA; Létard JF Photomagnetic studies on spin-crossover solid solutions containing two different metal complexes, [Fe(1-bpp)(2)](x)[M(terpy)2](1-x)[BF4]2 (M = Ru or Co). Dalton Trans 41 4896-4902, 2012
DOI:10.1039/c2dt12122k
View abstract

Docherty R; Tuna F; Kilner CA; McInnes EJ; Halcrow MA Suppression of the Jahn-Teller distortion in a six-coordinate copper(II) complex by doping it into a host lattice. Chem Commun (Camb) 48 4055-4057, 2012
DOI:10.1039/c2cc30873h
View abstract

Diener SA; Santoro A; Kilner CA; Loughrey JJ; Halcrow MA Iron(II) complexes of new hexadentate 1,1,1-tris-(iminomethyl)ethane podands, and their 7-methyl-1,3,5-triazaadamantane rearrangement products. Dalton Trans 41 3731-3739, 2012
DOI:10.1039/c2dt11911k
View abstract

Little MA; Donkin J; Fisher J; Halcrow MA; Loder J; Hardie MJ Synthesis and methane-binding properties of disulfide-linked cryptophane-0.0.0. Angew Chem Int Ed Engl 51 764-766, 2012
DOI:10.1002/anie.201106512

Roberts TD; Tuna F; Malkin TL; Kilner CA; Halcrow MA An iron(II) complex exhibiting five anhydrous phases, two of which interconvert by spin-crossover with wide hysteresis CHEMICAL SCIENCE 3 349-354, 2012
DOI:10.1039/c1sc00584g

Loughrey JJ; Kilner CA; Hardie MJ; Halcrow MA Six new crystalline clathrates of cyclotricatechylene (CTC) including two donor-acceptor complexes Supramolecular Chemistry 24 2-13, 2012
DOI:10.1080/10610278.2011.611246
View abstract

Fujinami T; Nishi K; Matsumoto N; Iijima S; Halcrow MA; Sunatsuki Y; Kojima M 1D and 2D assembly structures by imidazole···chloride hydrogen bonds of iron(II) complexes [Fe(II)(HL(n-Pr))3]Cl·Y (HL(n-Pr) = 2-methylimidazol-4-yl-methylideneamino-n-propyl; Y = AsF6, BF4) and their spin states. Dalton Trans 40 12301-12309, 2011
DOI:10.1039/c1dt11063b
View abstract

Barrett SA; Kilner CA; Halcrow MA Spin-crossover in [Fe(3-bpp)2][BF4]2 in different solvents--a dramatic stabilisation of the low-spin state in water. Dalton Trans 40 12021-12024, 2011
DOI:10.1039/c1dt10620a
View abstract

Nishi K; Matsumoto N; Iijima S; Halcrow MA; Sunatsuki Y; Kojima M A hydrogen bond motif giving a variety of supramolecular assembly structures and spin-crossover behaviors. Inorg Chem 50 11303-11305, 2011
DOI:10.1021/ic201993z
View abstract

Munoz S; Pons J; Ros J; Kilner CA; Halcrow MA Exploring the reactivity of an N-pyrazole, P-phosphine hybrid ligand with Cu(I), Ag(I) and Au(I) precursors J ORGANOMET CHEM 696 2736-2741, 2011
DOI:10.1016/j.jorganchem.2011.04.019

Munoz S; Pons J; Ros J; Font-Bardia M; Kilner CA; Halcrow MA Study of the coordination behaviour of (3,5-diphenyl-1H-pyrazol-1-yl)ethanol against Pd(II), Zn(II) and Cu(II) INORG CHIM ACTA 373 211-218, 2011
DOI:10.1016/j.ica.2011.04.027

Halcrow MA Structure:function relationships in molecular spin-crossover complexes. Chem Soc Rev 40 4119-4142, 2011
DOI:10.1039/c1cs15046d
View abstract

Henkelis JJ; Kilner CA; Halcrow MA New insights into the aggregation of silver pyrazolides using sterically hindered bidentate pyrazole ligands. Chem Commun (Camb) 47 5187-5189, 2011
DOI:10.1039/c1cc00054c
View abstract

Furusho D; Nishi K; Hashibe T; Fujinami T; Hagiwara H; Matsumoto N; Halcrow MA; Iijima S; Sunatsuki Y; Kojima M Assembly Structures and Spin Crossover Properties of Facial and Meridional Isomers of Tris[benzyl(2-methylimidazol-4-ylmethylidene)amine]iron(II) Chloride Hexafluorophosphate CHEM LETT 40 72-74, 2011
DOI:10.1246/cl.2011.72

Henkelis JJ; Jones LF; de Miranda MP; Kilner CA; Halcrow MA Two heptacopper(II) disk complexes with a [Cu(7)(μ(3)-OH)(4)(μ-OR)(2)](8+) core. Inorg Chem 49 11127-11132, 2010
DOI:10.1021/ic1020093
View abstract

Little MA; Halcrow MA; Harding LP; Hardie MJ Ag(I) organometallic coordination polymers and capsule with tris-allyl cyclotriveratrylene derivatives. Inorg Chem 49 9486-9496, 2010
DOI:10.1021/ic101211n
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Kilner CA; Halcrow MA An unusual discontinuity in the thermal spin transition in [Co(terpy)2][BF4]2. Dalton Trans 39 9008-9012, 2010
DOI:10.1039/c0dt00295j
View abstract

Jones LF; Kilner CA; Halcrow MA A Trinuclear Iron(III) Compound with an Unusual T-Shaped [Fe-3(mu(3)-O)](7+) Core J CLUST SCI 21 279-290, 2010
DOI:10.1007/s10876-010-0283-0

Halcrow MA Using one spin-transition to trigger another in solid solutions of two different spin-crossover complexes. Chem Commun (Camb) 46 4761-4763, 2010
DOI:10.1039/c0cc00603c
View abstract

Kilner CA; Halcrow MA Change in electronic structure in a six-coordinate copper(II) complex accompanied by an anion order/disorder transition. Acta Crystallogr B 66 206-212, 2010
DOI:10.1107/S0108768110003678
View abstract

Tovee CA; Kilner CA; Barrett SA; Thomas JA; Halcrow MA A Back-to-Back Ligand with Dipyrazolylpyridine and Dipicolylamine Metal-Binding Domains EUR J INORG CHEM 1007-1012, 2010
DOI:10.1002/ejic.200901107

Day J; Marriott KER; Kilner CA; Halcrow MA The effect of different ligand substituents on the chemistry of a zinc-pyrazole anion host NEW J CHEM 34 52-60, 2010
DOI:10.1039/b9nj00412b

Halcrow MA Iron(II) complexes of 2,6-di(pyrazol-1-yl)pyridines-A versatile system for spin-crossover research COORDIN CHEM REV 253 2493-2514, 2009
DOI:10.1016/j.ccr.2009.07.009

Marriott KE; Kilner CA; Halcrow MA 3-(1H-pyrrol-2-yl)-1H-pyrazole forms an unusual hydrogen-bonded two-dimensional (3,4)-connected net. Acta Crystallogr C 65 o506-o508, 2009
DOI:10.1107/S0108270109034568
View abstract

Pritchard R; Kilner CA; Barrett SA; Halcrow MA Two new 4 ',4 ''-disubstituted dipyrazolylpyridine derivatives, and the structures and spin states of their iron(II) complexes INORG CHIM ACTA 362 4365-4371, 2009
DOI:10.1016/j.ica.2009.01.022

Pritchard R; Lazar H; Barrett SA; Kilner CA; Asthana S; Carbonera C; Létard JF; Halcrow MA Thermal and light-induced spin-transitions in iron(II) complexes of 2,6-bis(4-halopyrazolyl)pyridines: the influence of polymorphism on a spin-crossover compound. Dalton Trans 6656-6666, 2009
DOI:10.1039/b907094j
View abstract

Pritchard R; Kilner CA; Halcrow MA Unexpected product distributions in the synthesis of 2,6-bis-(indazolyl)pyridine and 2-(pyrazol-1-yl)-6-(indazolyl)pyridine TETRAHEDRON LETT 50 2484-2486, 2009
DOI:10.1016/j.tetlet.2009.03.035

Halcrow MA Pyrazoles and pyrazolides-flexible synthons in self-assembly. Dalton Trans 2059-2073, 2009
DOI:10.1039/b815577a
View abstract

Pritchard R; Barrett SA; Kilner CA; Halcrow MA The influence of ligand conformation on the thermal spin transitions in iron(III) saltrien complexes (pg 3159, 2008) DALTON T 10622-10622, 2009

Tovee CA; Kilner CA; Thomas JA; Halcrow MA Co-crystallising two functional complex molecules in a terpyridine embrace lattice CRYSTENGCOMM 11 2069-2077, 2009
DOI:10.1039/b904528g

Jones LF; Kilner CA; Halcrow MA A cobalt metallacrown anion host with guest-dependent redox activity. Chemistry 15 4667-4675, 2009
DOI:10.1002/chem.200802368
View abstract

Salaudeen AA; Kilner CA; Halcrow MA A crystalline hydrogen-bonded network with a poly-catenate topology. Chem Commun (Camb) 5200-5202, 2008
DOI:10.1039/b810393c
View abstract

Rogers MS; Hurtado-Guerrero R; Firbank SJ; Halcrow MA; Dooley DM; Phillips SE; Knowles PF; McPherson MJ Cross-link formation of the cysteine 228-tyrosine 272 catalytic cofactor of galactose oxidase does not require dioxygen. Biochemistry 47 10428-10439, 2008
DOI:10.1021/bi8010835
View abstract

Salaudeen AA; Kilner CA; Halcrow MA Mononuclear and dinuclear iron thiocyanate and selenocyanate complexes of tris-pyrazolyl methane ligands POLYHEDRON 27 2569-2576, 2008
DOI:10.1016/j.poly.2008.05.013

Halcrow MA Trapping and manipulating excited spin states of transition metal compounds CHEM SOC REV 37 278-289, 2008
DOI:10.1039/b701085k

Pritchard R; Barrett SA; Kilner CA; Halcrow MA The influence of ligand conformation on the thermal spin transitions in iron(III) saltrien complexes DALTON T 3159-3168, 2008
DOI:10.1039/b801892h

Jones LF; Barrett SA; Kilner CA; Halcrow MA Ammonium,alkylammonium, and amino acid complexes of a hexacopper fluoro-metallacrown cavitand Chemistry a European journal 14 223-233, 2008

Mokuolu QF; Kilner CA; McGowan PC; Halcrow MA Mononuclear and unsymmetric dinuclear complexes of the tripodal ligand 2-hydroxyethyl-bis(2-{pyrid-2-yl}ethyl)amine INORG CHIM ACTA 360 4025-4030, 2007
DOI:10.1016/j.ica.2007.04.046

Jones LF; Kilner CA; Halcrow MA Variable temperature structural and magnetic characterisation of the cubane cluster [CU4(mu(3)-OH)(4)(L)(4)][ClO4](4) (L=5-tert-butyl-3-(pyrid-2-yl)-1H-pyrazole) POLYHEDRON 26 1977-1983, 2007
View abstract

Money VA; Carbonera C; Elhaik J; Halcrow MA; Howard JAK; Letard JF Interplay Between Kinetically Slow Thermal Spin-Crossover and Metastable High-Spin State Relaxation in an Iron(II) Complex with Similar T½ and T(LIESST) Chemistry a European journal 13 5503-5514, 2007
DOI:10.1002/chem.200601312

Jones LF; Kilner CA; Pessoa de Miranda M; Wolowska J; Halcrow MA A hexacopper fluoro metallacrown cavitand and its alkali metal complexes Angewandte Chemie - International Edition 46 4073-4076, 2007
DOI:10.1002/anie.200700584

Carbonera C; Kilner CA; Létard JF; Halcrow MA Anion doping as a probe of cooperativity in the molecular spin-crossover compound [FeL2][BF4]2 (L = 2,6-di{pyrazol-1-yl}pyridine). Dalton Trans 1284-1292, 2007
DOI:10.1039/b618480d
View abstract

McGowan PC; Halcrow MA; Kilner CA; Mokuolu QF; Foguet-Albiol D; Jones LF; Wolowska J; Kowalczyk RM; Christou G Four copper(II)pyrazolido complexes derived from reactions of 3(5)-substituted pyrazoles with CuF2 or Cu(OH)(2) Dalton Transactions 1392-1399, 2007

Pask CM; Kilner CA; Halcrow MA 2-[5-(2,2-Dimethylpropanamido)-1H-pyrazol-3-yl]pyridinium chloride Acta Crystallographica Section E 63 pp.02933-, 2007

Jones LF; Kilner CA; Halcrow MA A comparison of different methods for fitting susceptibility data of cobalt(II) coordination polymers in a new cobalt(II)/sulfate 1-D chain NEW J CHEM 31 1530-1534, 2007
DOI:10.1039/b700987a

Tovee CA; Kilner CA; Thomas JA; Halcrow MA Zwitterionic 2-(4-pyridul)malondialdehyde sesquihydrate forms a helical, three-dimensional hydrogen-bonded lattice CrystEngComm 9 361-363, 2007

Pritchard R; Kilner CA; Halcrow MA Iron(II) complexes with a terpyridine embrace packing motif show remarkably consistent cooperative spin-transitions CHEM COMMUN 577-579, 2007
DOI:10.1039/b613402e

Elhaik J; Pask CM; Kilner CA; Halcrow MA Synthesis of 2,6-di(pyrazol-1-yl)-4-bromomethylpyridine, and its conversion to other 2,6-di(pyrazol-1-yl)pyridines substituted at the pyridine ring Tetrahedron 63 291-298, 2007

Lazar HZ; Forestier T; Barrett SA; Kilner CA; Letard JF; Halcrow MA Thermal and light-induced spin-crossover in salts of the heptadentate complex [tris(4-{pyrazol-3-yl}-3-aza-3-butenyl)amine]iron(II) Dalton Transactions 4276-4285, 2007

Halcrow MA The spin-states and spin-transitions of mononuclear iron(II) complexes of nitrogen-donor ligands Polyhedron 26 3523-3576, 2007

Renard SL; Sylvestre I; Barrett SA; Kilner CA; Halcrow MA Homoleptic zinc(II) complexes with first and second coordination shells of 5-tert-butylpyrazole. Inorg Chem 45 8711-8718, 2006
DOI:10.1021/ic052144q
View abstract

Kilner CA; Halcrow MA An unusual example of a linearly coordinated acetone ligand in a six-coordinate iron (II) complex ACTA CRYSTALLOGR C 62 M437-M439, 2006
DOI:10.1107/S0108270106028903

Pask CM; Camm KD; Kilner CA; Halcrow MA Synthesis of a new series of ditopic proligands for metal salts: differing regiochemistry of electrophilic attack at 3{5}-amino-5{3}-(pyrid-2-yl)-1H-pyrazole Tetrahedron Letters 47 2531-2534, 2006

Balamurugan R; Palaniandavar M; Halcrow MA Copper(II) complexes of sterically hindered Schiff base ligands: Synthesis, structure, spectra and electrochemistry POLYHEDRON 25 1077-1088, 2006
DOI:10.1016/j.poly.2005.07.047

Elhaïk J; Kilner CA; Halcrow MA Structural diversity in iron(II) complexes of 2,6-di(pyrazol-1-yl)pyridine and 2,6-di(3-methylpyrazol-1-yl)pyridine. Dalton Trans 823-830, 2006
DOI:10.1039/b510370c
View abstract

Pask CM; Camm KD; Bullen NJ; Carr MJ; Clegg W; Kilner CA; Halcrow MA Two complexes of copper(II) salts with 5-amino-3-(pyrid-2-yl)-1H-pyrazole, the prototype for a new class of ditopic ligand. Dalton Trans 662-664, 2006
DOI:10.1039/b514634h
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Kilner CA; Halcrow MA An iron(II) complex of 2,6-di(pyrazol-1-yl)pyrazine that crystallises in three forms, two of which exhibit an unusual angular Jahn-Teller distortion POLYHEDRON 25 235-240, 2006
DOI:10.1016/j.poly.2005.06.034

Jones LF; Camm KD; Kilner CA; Halcrow MA Novel hydrogen bond network topologies in complexes of the ditopic ligand 5-amino-3-(pyrid-2-yl)-1H-pyrazole CrystEngComm 8 719-728, 2006

Carbonera C; Costa JS; Money VA; Elhaik J; Howard JAK; Halcrow MA; Letard JF Photomagnetic properties of iron(II) spin crossover complexes of 2,6-dipyrazolylpyridine and 2,6-dipyrazolylpyrazine ligands DALTON T 3058-3066, 2006
DOI:10.1039/b601366j

Halcrow MA The synthesis and coordination chemistry of 2,6-bis(pyrazolyl)pyridines and related ligands - Versatile terpyridine analogues COORDIN CHEM REV 249 2880-2908, 2005
DOI:10.1016/j.ccr.2005.03.010

Mokuolu QF; Kilner CA; Barrett SA; McGowan PC; Halcrow MA An unusual zinc-promoted decomposition of a bis(2-{pyrid-2-yl}ethyl)amine derivative. Inorg Chem 44 4136-4138, 2005
DOI:10.1021/ic050270o
View abstract

Rizk AT; Kilner CA; Halcrow MA Two regioisomers of (pyrid-2-yl) tetrazole which form two-dimensional five- and six-connected nets through hydrogen bonding CRYSTENGCOMM 7 359-362, 2005
DOI:10.1039/b506015j

Raja A; Rajendiran V; Maheswari PU; Balamurugan R; Kilner CA; Halcrow MA; Palaniandavar M Copper(II) complexes of tridentate pyridylmethylethylenediamines: Role of ligand steric hindrance on DNA binding and cleavage Journal of Inorganic Biochemistry 99 1717-1732, 2005
DOI:10.1016/j.jinorgbio.2005.05.014

Sylvestre I; Kilner CA; Halcrow MA 2-[Bis(pyrazol-1-yl)methyl]-4-tert-butyl-6-(phenylsulfanyl)phenol. Acta Crystallogr C 61 o294-o296, 2005
DOI:10.1107/S0108270105007675
View abstract

Sylvestre I; Wolowska J; McInnes EJL; Kilner CA; Halcrow MA An unexpected destabilisation of copper(II) phenoxyl radical species by steric protection Inorganica Chimica Acta 358 1337-1341, 2005
DOI:10.1016/j.ica.2004.11.004

Elhaik J; Kilner CA; Halcrow MA An iron(II) complex salt that crystallises in three crystal forms, one of which undergoes a sterically controlled incomplete spin-state transition on cooling CRYSTENGCOMM 7 151-157, 2005
DOI:10.1039/b417718e

Sylvestre I; Wolowska J; Kilner CA; McInnes EJL; Halcrow MA Copper(II) complexes of thioether-substituted salcyen and salcyan derivatives and their silver(I) adducts DALTON T 3241-3249, 2005
DOI:10.1039/b505972k

Elhaik J; Evans DJ; Kilner CA; Halcrow MA A structural, magnetic and Mossbauer spectroscopic study of an unusual angular Jahn-Teller distortion in a series of hight-spin iron(II) complexes Dalton Transactions 1693-1700, 2005
DOI:10.1039/b502175h

Nixon T; Dalgamo S; Ward C; Jiang M; Halcrow MA; Kilner CA; Thornton-Pett MA; Kee TP Stereocontrol in asymmetric phospho-aldol catalysis. Chirality relaying in action Comptes Rendus Chimie 7 809-821, 2004
DOI:10.1016/j.crci.2003.10.020

Money VA; Costa JS; Marcen S; Chastanet G; Elhaik J; Halcrow MA; Howard JAK; Letard JF A photomagnetic study of three iron(II) compounds containing ligands from the 2,6-di(pyrazol-1-yl)pyridine series CHEM PHYS LETT 391 273-277, 2004
DOI:10.1016/j.cplett.2004.05.020

Liu X; McAllister JA; de Miranda MP; McInnes EJ; Kilner CA; Halcrow MA Reactions of copper(II) salts with 3[5]-tert-butylpyrazole: double-cubane complexes with bound exogenous anions, and a novel pyrazole coordination mode. Chemistry 10 1827-1837, 2004
DOI:10.1002/chem.200305613
View abstract

Hardie MJ; Kilner CA; Halcrow MA Tris[4-(1H-pyrazol-3-yl)-3-azabut-3-enyl]amine iron(II) diperchlorate monohydrate. Acta Crystallogr C 60 m177-m179, 2004
DOI:10.1107/S010827010400407X
View abstract

Halcrow MA; Kilner CA; Wolowska J; McInnes EJL; Bridgeman AJ Temperature dependence of the electronic ground states of two mononuclear, six-coordinate copper(II) centres New Journal of Chemistry 28 228-233, 2004
DOI:10.1039/b309071j

Money VA; Evans IR; Elhaik J; Halcrow MA; Howard JAK An X-ray powder diffraction study of the spin-crossover transition and structure of bis (2,6-dipyrazol-1-ylpyrazine)iron(II) perchlorate ACTA CRYSTALLOGR B 60 41-45, 2004
DOI:10.1107/S0108768103027897

Kilner CA; McInnes EJ; Leech MA; Beddard GS; Howard JA; Mabbs FE; Collison D; Bridgeman AJ; Halcrow MA A crystallographic, EPR and theoretical study of the Jahn-Teller distortion in [CuTp2] (Tp- = tris[pyrazol-1-yl]hydridoborate). Dalton Trans 236-243, 2004
DOI:10.1039/b312426f
View abstract

Liu XM; de Miranda MP; McInnes EJL; Kilner CA; Halcrow MA Antisymmetric exchange in two tricopper(II) complexes containing a [Cu-3(mu(3)-OMe)](5+) core DALTON T 59-64, 2004
DOI:10.1039/b311980g

Firbank S; Rogers M; Guerrero RH; Dooley DM; Halcrow MA; Phillips SE; Knowles PF; McPherson MJ Cofactor processing galactose oxidase FREE RADICALS: ENZYMOLOGY, SIGNALLING AND DISEASE 15-25, 2004

Money VA; Elhaik J; Evans IR; Halcrow MA; Howard JAK A study of the thermal and light induced spin transition in [FeL2](BF4)(2) and [FeL2](ClO4)(2) L=2,6-di(3-methylpyrazol-1-yl)pyrazine DALTON T 65-69, 2004
DOI:10.1039/b311262b

Leaver SA; Kilner CA; Halcrow MA Di-mu-hydroxo-bis({bis[2-(2-pyridyl)ethyl]amine-kappa N-3}copper(II)) dichloride hexahydrate ACTA CRYSTALLOGR C 60 M1-M3, 2004
DOI:10.1107/S0108270103026064

Bradford FE; Connor LP; Kilner CA; Halcrow MA Iron complexes of 3-(pyrazinyl)-1,2,4-triazole derivatives Polyhedron 23 2141-2151, 2004
DOI:10.1016/j.poly.2004.06.018

Halcrow MA; Kilner CA; Wolowska J; McInnes EJL; Bridgeman AJ Temperature dependence of the electronic ground states of two mononuclear, six-coordinate copper(II) centres (vol 28, pg 228, 2004) NEW J CHEM 28 887-887, 2004

Money VA; Elhaik J; Halcrow MA; Howard JAK The thermal and light induced spin transition in [FeL2](BF4)(2) (L=2,6-dipyrazol-1-yl-4-hydroxymethylpyridine) DALTON T 1516-1518, 2004
DOI:10.1039/b401155d

Liu XM; Renard SL; Kilner CA; Halcrow MA The structures and decomposition products of palladium(II) and platinum(II) terpyridine phenoxide complexes INORG CHEM COMMUN 6 598-603, 2003
DOI:10.1016/S1387-7003(03)00052-2

Elhaik J; Money VA; Barrett SA; Kilner CA; Radosavljevic Evans I; Halcrow MA The spin-states and spin-crossover behaviour of iron(II) complexes of 2,6-dipyrazol-1-ylpyrazine derivatives Dalton Transactions 2053-2060, 2003
DOI:10.1039/b210368k

Shackleton Z; Kilner CA; Reid GD; Halcrow MA (eta(2)-Tetracyanoethene)bis(triphenylphosphine-kappa P)palladium-dichloromethane (1/0.7) ACTA CRYSTALLOGR C 59 M136-M138, 2003
DOI:10.1107/S010827010300458X

Liu XM; Kilner CA; Halcrow MA Hexa-mu-chloro-mu(4)-oxo-tetrakis-{[5-(2,4,6-trimethylphenyl)pyrazole-kappa N-2]copper(II)} ACTA CRYSTALLOGR C 59 M100-M102, 2003
DOI:10.1107/S0108270103002853

Smithson RJ; Kilner CA; Brough AR; Halcrow MA Iron(II) complexes of (pyrazol-3-yl)pyrazine. Anion-dependant formation of a hydrogen-bonded chiral nanoporous lattice Polyhedron 22 725-733, 2003
DOI:10.1016/S0277-5387(02)01403-1

Leaver SA; Palaniandavar M; Kilner CA; Halcrow MA A new synthesis of bis(2-{pyrid-2-yl}ethyl)amine (L-H) from bis(2-{pyrid-2-yl}ethyl)hydroxylamine (L-OH), and the copper-dependent reduction of L-OH to L-H DALTON T 4224-4225, 2003
DOI:10.1039/b310144d

Halcrow MA Monocopper oxygenases In Comprehensive Coordination Chemistry II from Biology to Nanotechnology , 2003

Firbank SJ; Rogers MS; Hurtado-Guerrero R; Dooley DM; Halcrow MA; Phillips SEV; Knowles PF; McPherson MJ Cofactor processing in galactose oxidase Biochemical Society Transactions 31 506-509, 2003
DOI:10.1042/BST10.1042/

Beddard GS; Halcrow MA; Hitchman MA; de Miranda MP; Simmons CJ; Stratemeier H Interpretation of the temperature dependence of the crystal structure of [CuL2][BF4](2) (L=2,6-dipyrazol-1-ylpyridine) DALTON T 1028-1032, 2003
DOI:10.1039/b211491g

Halcrow MA Interpreting and controlling the structures of six-coordinate copper(II) centres - When is a compression really a compression? DALTON T 4375-4384, 2003
DOI:10.1039/b309242a

Halcrow MA; Kilner CA Bis{2,6-bis[3-(2,4,6-trimethylphenyl)-pyrazol-1-yl-êN2]pyridine-êN}-cobalt(II) dinitrate at 290 and 150 K Acta Crystallographica. Section C: Crystal Structure Communications 59 61-63, 2003
DOI:10.1107/S0108270102023296

Money VA; Evans IR; Halcrow MA; Goeta AE; Howard JAK Light induced excited high spin-state trapping in [FeL2](BF4)(2) (L=2,6-di(pyrazol-1-yl)pyridine) CHEM COMMUN 158-159, 2003
DOI:10.1039/b210146g

Liu X; McLaughlin AC; de Miranda MP; McInnes EJ; Kilner CA; Halcrow MA A cyclic hexacopper(II) fluoro complex that encapsulates two fluoride anions. Chem Commun (Camb) 2978-2979, 2002
View abstract

Renard SL; Franken A; Kilner CA; Kennedy JD; Halcrow MA Carbaborane salts of [ZnCl(Hpz(tBu))(3)](+) a host for inorganic anions (Hpz(tBu)=5-tert-butylpyrazole) NEW J CHEM 26 1634-1637, 2002
DOI:10.1039/b207966f

Hallam MJ; Kilner CA; Halcrow MA Bis[mu-3[5]-(2-pyridyl)pyrazolido]bis[(acetonitrile)copper(II)] diperchlorate. Acta Crystallogr C 58 m445-m446, 2002
View abstract

Hallam MJ; Kilner CA; Halcrow MA Bis[μ-3{5}-(2-pyridyl)pyrazolido]-bis[(acetonitrile)copper(II)] diperchlorate Acta Crystallographica Section C: Crystal Structure Communications 58 -, 2002
DOI:10.1107/S010827010201154X
View abstract

Halcrow MA; Kilner CA 2,6-Bis(3,5-dimethylpyrazol-1-yl-methyl)pyridine iodocopper(I) dichloromethane solvate Acta Crystallographica. Section C: Crystal Structure Communications 58 m424-m426, 2002
DOI:10.1107/S0108270102010053

Holland JM; Barrett SA; Kilner CA; Halcrow MA Control of the spin state of Fe(II) 2,6-di(pyrazol-1-yl)pyridine complexes by distal ligand substitution INORG CHEM COMMUN 5 328-332, 2002

Foster C; Kilner CA; Thornton-Pett MA; Halcrow MA Steric effects on the stereochemistry of copper complexes of 2,6-bis(pyrazol-1-ylmethyl) pyridines Polyhedron 21 1031-1041, 2002
DOI:10.1016/S0277-5387(02)00872-0

Liu XM; Kilner CA; Halcrow MA Tetrakis(5-tert-butylpyrazole-1 kappa N-2)-tetrachloro-1 kappa Cl,2 kappa(3) Cl-mu-oxo-1 : 2 kappa O-2-diiron(III) ACTA CRYSTALLOGR C 58 m290-m291, 2002
DOI:10.1107/s0108270102004948

Liu X; Kilner CA; Halcrow MA Tetrakis(5-tert-butylpyrazole-1κN2)-tetrachloro-1κCl ,2κ3Cl-μ-oxo-1:2κ2Odiiron(III) Acta Crystallographica Section C: Crystal Structure Communications 58 -, 2002
DOI:10.1107/S0108270102004948
View abstract

Liu X; Kilner CA; Halcrow MA 3(5)-tert-butylpyrazole is a ditopic receptor for zinc(II) halides. Chemical communications (Cambridge, England) 704-705, 2002
View abstract

Solanki NK; Leech MA; McInnes EJL; Mabbs FE; Howard JAK; Kilner CA; Rawson JM; Halcrow MA A crystallographic and EPR study of the fluxional Cu(II) ion in [CuL2][BF4](2) (L=2,6-dipyrazol-1-yipyridine) J CHEM SOC DALTON 1295-1301, 2002
DOI:10.1039/b109201b

Liu XM; Kilner CA; Halcrow MA 3,4-(4-Methoxybenzo): 8,9-benzo-bicyclo[4.4.1]undeca-3,8-dien-11-one ethylene acetal ACTA CRYSTALLOGR C 58 O218-O219, 2002
DOI:10.1107/S0108270102001816

Liu X; Kilner CA; Halcrow MA 3{5}-tert-Butylpyrazole is a ditopic receptor for zinc(II) halides Chemical Communications 7 704-705, 2002
DOI:10.1039/b200551b

Liu XM; Barrett SA; Kilner CA; Thornton-Pett M; Halcrow MA Syntheses of new hydroxy-[3.3]orthocyclophanes as models for the galactose oxidase Tyr-Cys cofactor TETRAHEDRON 58 603-611, 2002

Halcrow MA Dissecting an enzyme - Model compounds for the galactose oxidase radical site Heteroatom Chemistry 13 494-500, 2002
DOI:10.1002/hc.10091

Holland JM; McAllister JA; Kilner CA; Thornton-Pett MA; Bridgeman AJ; Halcrow MA Stereochemical effects on the spin-state transition shown by salts of FeL2(2+) L=2,6-di(pyrazol-1-yl)pyridine Dalton Transactions 548-554, 2002

Liu XM; McAllister JA; de Miranda MP; Whitaker BJ; Kilner CA; Thornton-Pett M; Halcrow MA Supramolecular templating of the double-cubane [{Cu-3(Hpz(tBu))(6)(mu(3)-Cl)(mu(3)-OH)(3)}(2)Cu]Cl-6 (Hpz(tBu)=5-tert-butylpyrazole) ANGEW CHEM INT EDIT 41 756-+, 2002

Renard SL; Kilner CA; Fisher J; Halcrow MA Supramolecular anion binding by the[ZnCl(HpztBu)3]+ cation (HpztBu = 5-tert-butylpyrazole) Journal of the Chemical Society, Dalton Transactions 4206-4212, 2002
View abstract

Liu XM; Kilner CA; Thornton-Pett M; Halcrow MA Bis[2-(pyrazol-3-yl)phenolato-kappa N-2(2),O]copper(II) dimethanol solvate ACTA CRYSTALLOGR C 58 M10-M11, 2002
DOI:10.1107/S0108270101017656

Solanki NK; McInnes EJL; Collison D; Kilner CA; Davies JE; Halcrow MA Copper(II) complexes of 2,6-bis(3-tert-butylpyrazol-1-yl)pyridine J CHEM SOC DALTON 1625-1630, 2002
DOI:10.1039/b111210b

Firbank SJ; Rogers MS; Wilmot CM; Dooley DM; Halcrow MA; Knowles PF; McPherson MJ; Phillips SEV Crystal structure of the precursor of galactose oxidase: An unusual self-processing enzyme P NATL ACAD SCI USA 98 12932-12937, 2001

Liu X; Kilner CA; Thornton-Pett MA; Halcrow MA Two complexes of CuBr2 with 5-tert-butylpyrazole Acta Crystallographica. Section C: Crystal Structure Communications 57 1253-1255, 2001
DOI:10.1107/S0108270101012653

Liu X; McInnes EJL; Kilner CA; Thornton-Pett MA; Halcrow MA Metal complexes of 4'-(3phenylpropoxy)-2,2': 6',2 "-terpyridine and 4 '-(3-propoxy)-2,2 ': 6 ' 2 "-terpyridine Polyhedron 20 2889-2900, 2001
DOI:10.1016/S0277-5387(01)00905-6

Kilner CA; Thornton-Pett MA; Halcrow MA Steric effects on the electronic and molecular structures of nickel(II) and cobalt(II) 2,6-dipryzol-1-ylpyridine complexes Polyhedron 20 2829-2840, 2001
DOI:10.1016/S0277-5387(01)00892-0

Jiang ML; Dalgarno S; Kilner CA; Halcrow MA; Kee TP Chiral bis(oxazoline) complexes. Synthesis, structure and applications in catalytic phospho-transfer POLYHEDRON 20 2151-2162, 2001

Halcrow MA; Kilner CA; Thornton-Pett M Bis[tris(3-cyclohexylpyrazol-1-yl)-hydridoborato]copper(II) dichloromethane disolvate. Acta Crystallogr C 57 711-713, 2001
View abstract

Liu XM; Kilner CA; Thornton-Pett M; Halcrow MA 1-(Dibromomethyl)-4-methoxy-2-methylbenzene ACTA CRYSTALLOGR C 57 317-318, 2001

Halcrow MA; Knowles PF; Phillips SEV Copper proteins in the transport and activation of dioxygen, and the reduction of inorganic molecules In Handbook on Metalloproteins , 2001

Solanki NK; Leech MA; McInnes EJL; Zhao JP; Mabbs FE; Feeder N; Howard JAK; Davies JE; Rawson JM; Halcrow MA The effects of distal ligand substitution on the copper(II)/bis-(2,6-dipyrazol-1-ylpyridine) centre J CHEM SOC DALTON 2083-2088, 2001
DOI:10.1039/b103142m

McAllister JM; Lu Z; Kilner CA; Thornton-Pett MA; Halcrow MA An unusual abrupt thermal spin-state transition in FeL2 BF4 (2) L=2,6-di(pyrazol-1-yl)pyridine Chemical Communications 577-578, 2001

Halcrow MA Chemically modified amino acids in copper proteins that bind or activate dioxygen Angewandte Chemie: International Edition 40 346-349, 2001
DOI:10.1002/1521-3773(20010119)40:2<346::AID-ANIE346>3.0.CO;2-R

Halcrow MA; Kilner CA; Thornton-Pett MA Bis{2,6-bis 3-(2,4,6-trimethylphenyl)-pyrazol-1-yl-kappa N-2 pyridine-kappa N} zinc(II) diperchlorate bis(nitromethane) solvate Acta Crystallographica. Section C: Crystal Structure Communications 56 1425-1426, 2000

Liu X; Kilner CA; Thornton-Pett M; Halcrow MA 4'-Vinyl-2,2':6',2"-terpyridine Acta Crystallogr C 56 (Pt 9) 1142-1143, 2000
View abstract

Foster CL; Kilner CA; Thornton-Pett M; Halcrow MA Bis[N,N′-bis(2,4,6-trimethylphenyl)-1,2-ethanediylidenediamine] copper(I) tetrafluoroborate Acta Crystallographica Section C: Crystal Structure Communications 56 319-320, 2000
View abstract

Halcrow MA; Kilner CA; Thornton-Pett M 2,6-bis-(3-trifluoromethylpyrazol-1-yl)-pyridine Acta Crystallogr C 56 (Pt 2) 213-214, 2000

Chia LML; Wheatley AEH; Feeder N; Davies JE; Halcrow MA Syntheses, structures and electrochemistry of [Zn(L1)2] (BF4)2·2H2O and [Zn(L1)(Tp(R))]BF4 (L1 = 1-{pyrid-2-yl}-3-{2',5'- dimethoxyphenyl} pyrazole; [Tp(R)]- = tris-{3-arylpyrazolyl} borate) Polyhedron 19 109-114, 2000
DOI:10.1016/S0277-5387(99)00343-5
View abstract

Holland JM; Liu X; Zhao JP; Mabbs FE; Kilncr CA; Thornton-Petf M; Halcrow MA Copper complexes of 2,6-bis(iminomethyl)pyridine derivatives and of l,3-bis(pyridin-2-yl)pyrazole. Effects of ligand bulk and conformational strain on the ground state of a six-co-ordinate copper(n) ion Journal of the Chemical Society, Dalton Transactions 3316-3324, 2000
DOI:10.1039/b005105p
View abstract

Chia LML; Radojevic S; Scowen IJ; McPartlin M; Halcrow MA Steric control of the reactivity of moderately hindered tris(pyrazolyl)borates with copper(II) salts Journal of the Chemical Society, Dalton Transactions 133-140, 2000
View abstract

Li P; Solanki NK; Ehrcnbcrg H; Feeder N; Davies JE; Rawson JM; Halcrow MA Copper(n) complexes of hydroquinone-containing Schiff bases. towards a structural model for copper amine oxidases Journal of the Chemical Society, Dalton Transactions 1559-1565, 2000
DOI:10.1039/b001320j
View abstract

Foster CL; Liu X; Kilner CA; Thornton-Pett M; Halcrow MA Complexes of 2-hydroxy-5-methyl-l,4-benzoquinone as models for the 'TPQ-on' form of copper amine oxidases Journal of the Chemical Society, Dalton Transactions 4563-4568, 2000
DOI:10.1039/b006700h
View abstract

Halcrow M; Phillips S; Knowles P Amine oxidases and galactose oxidase. Subcell Biochem 35 183-231, 2000

Chia LML; Halcrow MA; Kilner CA; Liu X; Thornton-Pett MA; Trofimenko S; Yellowlees LJ An intramolecularπ-π interaction has no effect on the lifetime of an aryl radical cation Chemical Communications 19 1947-1948, 2000

Bridgeman AJ; Halcrow MA; Jones M; Krausz E; Solanki NK The ground state of a tetragonally compressed copper(II) complex Chemical Physics Letters 314 176-181, 1999
View abstract

Leech MA; Solanki NK; Halcrow MA; Howard JAK; Dahaoui S A solid-state phase transition at 41 K involving the cooperative ordering of a fluxional pseudo-Jahn-Teller Cu(II) system Chemical Communications 2245-2246, 1999
View abstract

Halcrow MA; Chia LML; Liu X; McInnes EJL; Yellowlees LJ; Mabbs FE; Scowen IJ; McPartlin M; Davies JE Syntheses, structures and electrochemistry of copper(II) salicylaldehyde/tris(3-phenylpyrazolyl)borate complexes as models for the radical copper oxidases Journal of the Chemical Society - Dalton Transactions 1753-1762, 1999
View abstract

Solanki NK; Wheatley AEH; Radojevic S; McPartlin M; Halcrow MA Structural variations in dicopper(I) double helicate complexes Journal of the Chemical Society - Dalton Transactions 521-523, 1999
View abstract

Bridgeman AJ; Charles EH; Chia LML; Farley RD; Halcrow MA; Mabbs FE; McInnes EJL; Rothery J; Rowlands CC; Watson EL Electronic structures of copper(II) complexes of tetradentate hydroquinone-containing Schiff bases Dalton Transactions 12 2087-2095, 1999

Li P; Scowen IJ; Davies JE; Halcrow MA Co-ordination chemistry of bis(ferrocenylcarbaldimine) Schiff bases Journal of the Chemical Society - Dalton Transactions 3791-3799, 1998
View abstract

Halcrow MA; Brechin EK; McInnes EJL; Mabbs FE; Davies JE Complex chemistry of 2,2,6,6-tetramethyl-4-(2,2′:6′,2″-terpyridin-4′-yloxy) piperidin-1-oxyl, a spin-labelled terpyridine Journal of the Chemical Society - Dalton Transactions 2477-2482, 1998
View abstract

Halcrow MA Urease In Comprehensive Biological Catalysis , 1998

Halcrow MA Nickel-dependent redox enzymes In Comprehensive Biological Catalysis , 1998

Halcrow MA The noble metals Annual Reports on the Progress of Chemistry - Section A 94 255-288, 1998

Chia LML; Davies JE; Halcrow MA; Liu X; Mabbs FE; McInnes EJL; Yellowlees LJ Spectroscopic characterisation of a copper(II) complex of a thioether-substituted phenoxyl radical: a new model for galactose oxidase Chemical Communications 22 2465-2466, 1998

Halcrow MA; McInnes EJL; Mabbs FE; Solanki NK; Radojevic S; Davies JE; Feeder N; McPartlin M Steric control of the electronic ground state in six-coordinate copper(II) complexes Angewandte Chemie: International Edition 37 2221-2223, 1998

Halcrow MA; McInnes EJL; Mabbs FE; Scowen IJ; McPartlin M; Powell HR; Davies JE Syntheses, structures and electrochemistry of [CuL1(LR)]BF4 [L1 = 3-{2,5-dimethoxyphenyl-1-(2-pyridyl)pyrazole; LR = tris(3-arylpyrazolyl)hydroborate] and [CuL1 2][BF4]2. Effects of graphitic interactions on the stability of an aryl radical cation Journal of the Chemical Society - Dalton Transactions 4025-4035, 1997
View abstract

Halcrow MA; Cromhout NL; Raithby PR Metal complexes of sterically hindered pyrazolylpyridines. The single crystal X-ray structure of [Cu(L1)2]BF4 (L1=1-{pyrid-2-yl}-3-{2′,5′-dimethoxyphenyl} pyrazole) Polyhedron 16 4257-4264, 1997
View abstract

Halcrow MA; Davies JE; Raithby PR The reactivity of CuX2 (X- = Cl-, Br-, MeCO-2) salts towards tris-pyrazolyl-borates of differing steric requirements. The single crystal X-ray structure of [CuCl(pzPhH)(HB{pzPh}3)]· CH2Cl2 Polyhedron 16 1535-1541, 1997
View abstract

Halcrow MA The noble metals Annual Reports on the Progress of Chemistry - Section A 93 241-267, 1997

Less RJ; Wicks JLM; Chatterton NP; Dewey MJ; Cromhout NL; Halcrow MA; Davies JE Synthesis, molecular structure and palladium(II) and platinum(II) complex chemistry of 3-(ferrocen-1-yl)-1-(pyridin-2-yl)pyrazole Journal of the Chemical Society - Dalton Transactions 4055-4061, 1996
View abstract

Beswick MA; Brasse C; Halcrow MA; Raithby PR; Russell CA; Steiner A; Snaith R; Wright DS Role of bifunctional N/S bridging in the association of metals; syntheses and structures of heterobimetallic [(Ph3P)2CuL2Li(thf)2]·thf and tetrameric [{CuL(PPh3)}4] (L = 1,3-benzoxazoline-2-thionate, thf = tetrahydrofuran) Journal of the Chemical Society - Dalton Transactions 3793-3797, 1996
View abstract

Halcrow MA; Powell HR; Duer MJ Tautomerism in 3{5}-(Dimethoxyphenyl)pyrazoles Acta Crystallographica Section B: Structural Science 52 746-752, 1996
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Halcrow MA The noble metals Annual Reports on the Progress of Chemistry - Section A 92 247-265, 1996

Halcrow MA; Streib WE; Folting K; Christou G [Mn6O2[O2C-3,5-(NO2)2-C6H3]10-(C5H5N)2[(CH3)2CO]2].2(CH3)2CO.- 2(C2H5)2O and [Mn6O2(O2CC6H5)10-(NCCH3)4]. Acta Crystallogr C 51 ( Pt 7) 1263-1267, 1995
View abstract

Halcrow MA; Huffman JC; Christou G A nickel(II) azide cubane: Characterization of the magnetic exchange interactions mediated by a triply bridging azide group bound end-on Angewandte Chemie (International Edition in English) 34 889-891, 1995

Halcrow MA; Sun J-S; Huffman JC; Christou G Structural and magnetic properties of [Ni4(μ3-OMe)4(dbm)4(MeOH) 4] and [Ni4(η1,-μ3-N3) 4(dbm)4(EtOH)4]. Magnetostructural correlations for [Ni4X4]4+ cubane complexes Inorganic Chemistry 34 4167-4177, 1995
View abstract

Halcrow MA; Christou G Biomimetic chemistry of nickel Chemical Reviews 94 2421-2481, 1994

Blake AJ; Halcrow MA; Schröder M Nickel thioether chemistry: Syntheses and crystal structures of [Ni2L2(μ-Cl)2][BF4]2 (L = 1,4,7,10-tetrathiacyclododecane, 1,4,8,11-tetrathiacyclotetradecane or 1,5,9,13-tetrathiacyclohexadecane) Journal of the Chemical Society, Dalton Transactions 1463-1470, 1994
DOI:10.1039/DT9940001463
View abstract

Blake AJ; Gould RO; Halcrow MA; Schröder M Synthesis of cationic half-sandwich rhodium(I) complexes of 1,4,7-trithiacyclononane ([9]aneS3). The single-crystal structures of [rh([9]aneS3)(C2H4)2]PF6, [rh([9]aneS3)(C8H12)]BF4 and [rh([9]aneS3)(C4H6)]PF 6·0.25OEt2 Journal of the Chemical Society, Dalton Transactions 2197-2208, 1994
DOI:10.1039/DT9940002197
View abstract

Blake AJ; Halcrow MA; Schröder M Organometallic macrocyclic chemistry: Synthesis of cationic half-sandwich iridium(I) complexes of 1,4,7-trithiacyclononane ([9]aneS3). Crystal structures of [Ir([9]aneS3)(C2H4)2]PF6, [Ir([9]aneS3)(C8H12)]PF6 and [Ir([9]aneS3)(C4H6)]PF... Journal of the Chemical Society, Dalton Transactions 1631-1639, 1994
DOI:10.1039/DT9940001631
View abstract

Halcrow MA; Huffman JC; Christou G Synthesis, characterization, and molecular structure of the new S2O complex Mo(S2O)(S2CNEt2)3·1/2Et2O Inorganic Chemistry 33 3639-3644, 1994
View abstract

URBANOS F; HALCROW M; FERNANDEZBAEZA J; DAHAN F; LABROUE D; CHAUDRET B SELECTIVE AROMATIZATION OF THE A-RING OF STEROIDS THROUGH C-C, C-H, AND C-O BOND ACTIVATION BY AN ELECTROPHILIC RUTHENIUM COMPLEX JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 115 3484-3493, 1993
DOI:10.1021/ja00062a011

HALCROW M; CHAUDRET B; TROFIMENKO S TRIS-PYRAZOLYL-BORATE DIHYDROGEN COMPLEXES OF RUTHENIUM JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS 465-467, 1993
DOI:10.1039/c39930000465

HALCROW M; URBANOS F; CHAUDRET B AROMATIZATION OF THE B-RING OF 5,7-DIENYL STEROIDS BY THE ELECTROPHILIC RUTHENIUM FRAGMENT [CP-ASTERISK-RU]+ ORGANOMETALLICS 12 955-957, 1993
DOI:10.1021/om00027a054

Blake AJ; Gould RO; Halcrow MA; Schröder M Nickel thioether chemistry: Synthesis, structures and electrochemistry of five-co-o rdinate nickel(II) complexes of [9]aneS3. Crystal structures of [Ni([9]aneS3)-(dppm)][PF6]2′, [Ni([9]aneS3)(dcpe)][PF6]2·1.25MeCN and [Ni([9]aneS3)(tdpme)][PF6]2 {[9]aneS3... Journal of the Chemical Society, Dalton Transactions 2909-2920, 1993
DOI:10.1039/DT9930002909
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Blake AJ; Halcrow MA; Schröder M Nickel thioether chemistry: Syntheses of nickel(II) complexes of tetra- and penta-thia macrocyclic ligands. The single-crystal structures of [Ni([16]aneS4)(OH2)2][BF4] 2 and [Ni([15]aneS5)][PF6]2 ([16]aneS4 =1,5,9,13-tetrathiacyclohexadecane... Journal of the Chemical Society, Dalton Transactions 2803-2808, 1992
DOI:10.1039/DT9920002803
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Blake AJ; Gould RO; Halcrow MA; Holder AJ; Hyde TI; Schröder M Nickel thioether chemistry: A re-examination of the electrochemistry of [Ni([9]aneS3)2]2+. The single-crystal X-ray structure of a nickel(III) thioether complex, [NiIII([9]aneS3)2][H5O 2]3[ClO4]6 ([9]aneS3 = 1,4,7-trithiacyclononane) Journal of the Chemical Society, Dalton Transactions 3427-3431, 1992
DOI:10.1039/DT9920003427
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Blake AJ; Halcrow MA; Schröder M Synthesis, structure and reactivity of cationic rhodium(I) and iridium(I) thioether crowns: Structures of [M([9]aneS3)(cod)]+ (M = Rh, Ir; cod = cycloocta-1,5-diene) and [Rh([9]aneS3)(C 2H4)2]+ ([9]aneS3 = 1,4,7-trithiacyclononane) Journal of the Chemical Society, Chemical Communications 253-256, 1991
DOI:10.1039/C39910000253
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