Newcastle University

Research Interests

Izod Group Research Page

Current research focuses on main group and lanthanide organometallic and coordination chemistry. We place particular emphasis on the synthesis and reactions of metal complexes having novel coordination environments by virtue of their unusual metal-ligand contacts, coordinative unsaturation or metal oxidation state. A more detailed description of our research interests can be found at the website above.

• Izod K, Wills C, Clegg W, Harrington RW. Synthesis, Structure, and Solution Behavior of a Phosphine-Borane-Stabilized 1,3-Dicarbanion. Organometallics 2010, 29(21), 4774-4777.
• Izod K, Stewart J, Clark ER, Clegg W, Harrington RW. Germanium(II) and Tin(II) Complexes of a Sterically Demanding Phosphanide Ligand. Inorganic Chemistry 2010, 49(10), 4698-4707.
• Izod K, Clegg W, Harrington RW. Lanthanide(II) complexes of a phosphine-borane-stabilised carbanion. Dalton Transactions 2010, 39(29), 6705-6709.
• Wills C, Izod K, Clegg W, Harrington RW. Oxidation reactions of a phosphine-borane-stabilised dialkylstannylene. Dalton Transactions 2010, 39(9), 2379-2384.
• Izod K, Stewart J, Clegg W, Harrington RW. Synthesis, structures and dynamic behavior of intramolecularly base-stabilized diphosphatetrylenes containing a five-membered chelate ring. Organometallics 2010, 29(1), 108-116.
• Izod K, Wills C, Clegg W, Harrington RW. Acyclic Dialkylstannylene and -Plumbylene Compounds That Are Monomeric in the Solid State. Organometallics 2009, 28(19), 5661-5668.
• Izod K, Stewart J, Clark ER, McFarlane W, Allen B, Clegg W, Harrington RW. Dynamic Behavior of Intramolecularly Base-Stabilized Phosphatetrylenes. Insights into the Inversion Processes of Trigonal Pyramidal Geramanium(II) and Tin(II) Centers. Organometallics 2009, 28(12), 3327-3337.
• Wills C, Izod K, Young J, Clegg W, Harrington RW. Mixed donor-functionalised phosphinomethanide complexes of the alkali metals; synthesis, structures, and solution dynamics. Dalton Transactions 2009, (31), 6159-6165.
• Izod K, Wills C, Clegg W, Harrington RW. Seven-Membered Cyclic Dialkylstannylene and -Plumbylene Compounds Stabilized by Agostic-type B-H center dot center dot center dot E Interactions [E = Sn, Pb]. Organometallics 2009, 28(7), 2211-2217.
• Izod K, Bowman LJ, Wills C, Clegg W, Harrington RW. Synthesis and structural characterisation of alkali metal complexes of heteroatom-stabilised 1,4-and 1,6-dicarbanions. Dalton Transactions 2009, (17), 3340-3347.
• Izod K, McFarlane W, Wills C, Clegg W, Harrington RW. Agostic-type B - H⋯Pb interactions stabilize a dialkylplumbylene. Structure of and bonding in [{nPr2P(BH3)}(Me 3Si)C(CH2)]2Pb. Organometallics 2008, 27(17), 4386-4394.
• Izod K, Stewart JC, Clegg W, Harrington RW. Alkali metal complexes of a naphthylamine-substituted phosphanide. Dalton Transactions 2008, (3), 363-370.
• Izod K, Wills C, Clegg W, Harrington RW. Alkali metal complexes of a phosphine-borane-stabilised carbanion: Influence of co-ligands on structure. Dalton Transactions 2007, (33), 3669-3675.
• Izod K, Stewart JC, Clegg W, Harrington RW. Alkali metal complexes of sterically demanding amino-functionalised secondary phosphanide ligands. Dalton Transactions 2007, (2), 257-264.
• Izod K, Wills C, Clegg W, Harrington RW. Alkaline earth metal complexes of a phosphine-borane-stabilized carbanion: Synthesis, structures, and stabilities. Inorganic Chemistry 2007, 46(10), 4320-4325.
• Izod K, Wills C, Clegg W, Harrington RW. Influence of aromatic ring substituents and co-ligand on the binding mode of a phosphine-borane-stabilized carbanion; crystal structures of [[(Me3Si)2{Ph2P(BH3)}C]KLn]2[Ln = (OEt2)2, pmdeta; pmdeta = N,N,N′,N″,N″-pentamethyldiethylenetriamine]. Journal of Organometallic Chemistry 2007, 692(22), 5060-5064.
• Izod K, Wills C, Clegg W, Harrington RW. Metalation of trimethylphosphine-borane. Unexpected reactivity of a simple phosphine-borane-stabilized carbanion toward siloxanes. Organometallics 2007, 26(11), 2861-2866.
• Bowman LJ, Izod K, Clegg W, Harrington RW. Synthesis and structures of Ln(II) and Ln(III) dialkyls derived from LnI2 (Ln = Nd, Tm, Yb). Organometallics 2007, 26(10), 2646-2651.
• Bowman LJ, Izod K, Clegg W, Harrington RW. σ-Bonded organometallic derivatives of yttrium(III) and thulium(III): An unusual ligand coupling reaction mediated by thulium(III). Journal of Organometallic Chemistry 2007, 692(4), 806-812.
• Bowman LJ, Izod K, Clegg W, Harrington RW, Smith JD, Eaborn C. Alkali metal complexes of sterically hindered mono- and di-carbanions containing Si-O bonds. Dalton Transactions 2006, (3), 502-508.
• Izod K, Liddle ST, Clegg W, Harrington RW. Amino-functionalised diarylphosphide complexes of the alkali metals and lanthanum. Dalton Transactions 2006, (28), 3431-3437.
• Izod K, Wills C, Clegg W, Harrington RW. Heavier alkali metal complexes of a silicon- and phosphine-borane- stabilized carbanion. Organometallics 2006, 25(22), 5326-5332.
• Bowman LJ, Izod K, Clegg W, Harrington RW. Heteroleptic complexes of lanthanum(III) and neodymium(III) with oxygen- or nitrogen-functionalized tris(triorganosilyl)methyl ligands. Organometallics 2006, 25(12), 2999-3006.
• Izod K, McFarlane W, Tyson BV, Carr I, Clegg W, Harrington RW. Stabilization of a dialkylstannylene by unusual B-H⋯Sn γ-agostic-type interactions. A structural, spectroscopic, and DFT study. Organometallics 2006, 25(5), 1135-1143.
• Liddle ST, Izod K. Synthesis and crystal structure of the heteroleptic lanthanum(III) bis-diphosphinomethanide complex [La{CH(PPh2)2}2(I)(THF)2]. Journal of Organometallic Chemistry 2006, 691(11), 2599-2603.
• Izod K, Wills C, Clegg W, Harrington RW. Synthesis, crystal structure, and solution behavior of a sterically hindered α-metalated phosphine-borane. Organometallics 2006, 25(1), 38-40.
• Izod K, McFarlane W, Allen B, Clegg W, Harrington RW. An intramolecularly base-stabilized diphosphagermylene and two unusual germanium(II) ate complexes: A structural, NMR, and DFT study. Organometallics 2005, 24(9), 2157-2167.
• Izod K, Young J, Clegg W, Harrington RW. Effect of peripheral donor substituents on the binding modes of phosphinomethanide ligands. Synthesis and crystal structures of alkali metal derivatives of an O-functionalised phosphinomethanide ligand. Dalton Transactions 2005, (9), 1658-1663.
• Khrustalev VN, Antipin MYu, Zemlyansky NN, Borisova IV, Ustynyuk YA, Lunin VV, Izod K. The germanium(II) ate complex [Ph3PiPr][Ge(OCOMe) 3]: The first structurally characterized compound containing a discrete [E14(II)O3](-) (E14(II) = Si, Ge, Sn or Pb) anion. Applied Organometallic Chemistry 2005, 19(3), 360-362.
• Izod K, Liddle ST, Clegg W. A Convenient Route to Lanthanide Triiodide THF Solvates. Crystal Structures of Lnl3(THF)4 [Ln = Pr] and Lnl 3(THF)3.5 [Ln = Nd, Gd, Y]. Inorganic Chemistry 2004, 43(1), 214-218.
• Izod K, McFarlane W, Tyson BV, Clegg W, Harrington RW. Complexes of a dianionic bis(diphosphinomethanide) with lithium, sodium, potassium and zirconium. Effect of substitution on the Schlenk dimerisation of vinylidene phosphines. Dalton Transactions 2004, (23), 4074-4078.
• Blair S, Izod K, Clegg W, Harrington RW. Complexes of the heavier alkaline earth metals Ca, Sr, and Ba with O-functionalized phosphanide ligands. Inorganic Chemistry 2004, 43(26), 8526-8531.
• Izod K, Liddle ST, Clegg W. Protonation of a lanthanum phosphide-alkyl occurs at the P-La not the C-La bond: Isolation of a cationic lanthanum alkyl complex. Chemical Communications 2004, 10(15), 1748-1749.
• Izod K, McFarlane W, Tyson BV. Scope and limitations of the Peterson olefination reaction as a route to vinylidene phosphanes. European Journal of Organic Chemistry 2004, (5), 1043-1048.
• Liddle ST, Izod K. Synthesis and characterization of 1,3-diphosphapropene and alkali-metal 1,3-diphosphaallyl complexes and unexpected 1,3-rearrangement of a cesium 1,3-diphosphaallyl complex to a cesium secondary phosphanide. Organometallics 2004, 23(23), 5550-5559.
• Izod K, Liddle ST, McFarlane W, Clegg W. Synthesis and Reactions of Sterically Encumbered, Heteroleptic Lanthanum Phosphides. Structural Characterization of [{(Me₃Si)₂CH}-(C₆H₄-2-CH₂NMe₂)P]₂La(OR) and [{(Me₃Si)₂CH}- (C₆H₄-2-CH₂NMe₂)P]La(THF)[P(C₆H₄-2-CH₂NMe₂)-{CH(SiMe₃)(SiMe₂CH₂)}] [R = i-Pr, t-Bu]. Organometallics 2004, 23(11), 2734-2743.
• Izod K, McFarlane W, Tyson BV, Clegg W, Harrington RW. Synthesis and structural characterisation of a novel phosphine-borane- stabilised dicarbanion and an unusual bis(phosphine-borane). Chemical Communications 2004, 10(5), 570-571.
• Izod K, McFarlane W, Tyson BV, Clegg W, Harrington RW, Liddle ST. Alkali Metal-Mediated Schlenk Dimerization of a Phosphorus-Substituted Alkene. Synthesis and Crystal Structures of Li, Na, and K Derivatives of a Phosphorus-Stabilized Butane-l,4-diide Ligand. Organometallics 2003, 22(18), 3684-3690.
• Izod K, Liddle ST, Clegg W. Alkyl complexes of strontium and barium: Synthesis and structural characterization of {(Me3Si)2(MeOMe2Si)C}2Sr(THF) and {(Me3Si)2(MeOMe2Si)C}2Ba (MeOCH2CH2OMe). Journal of the American Chemical Society 2003, 125(25), 7534-7535.
• Blair S, Izod K, Clegg W. C2-Symmetric ytterbium(II) complexes with a novel, chiral P,N-donor ligand. Journal of Organometallic Chemistry 2003, 688(1-2), 92-99.
• Blair S, Izod K, Clegg W, Harrington RW. Organomagnesium phosphanide "grignard" analogues - Synthesis, structural characterisation and solution behaviour of [BuMg{P(CH[SiMe 3]2)(C6H3-2-OMe-3R)}]2 [R = H, Me]. European Journal of Inorganic Chemistry 2003, (18), 3319-3324.
• Blair S, Izod K, Harrington RW, Clegg W. Sterically controlled mono- or dimetalation of a thioether-functionalized phosphine and an unusual light-induced phosphide-thiolate rearrangement. Organometallics 2003, 22(2), 302-308.
• Liddle ST, Izod K. The first structurally authenticated alkali metal 1,3-diphosphaallyl complex [{ButC(PMes)2}Li(thf)3] (Mes = 2,4,6-Me3C6H2): An alternative synthetic approach to substituted 1,3-diphosphaallyl complexes. Chemical Communications 2003, 9(6), 772-773.
• Blair S, Izod K, Clegg W. A Homologous Series of Alkaline Earth Phosphanides: Syntheses, Crystal Structures, and Unusual Dynamic Behavior of (THF)_nM[P{CH(Si- Me₃)₂}(C₆H₄-2-CH₂NMe₂)]₂ (M = Mg, Ca, Sr, Ba). Inorganic Chemistry 2002, 41(15), 3886-3893.
• Izod K. A new era in divalent organolanthanide chemistry?. Angewandte Chemie: International Edition 2002, 41(5), 743-744.
• Izod K, McFarlane W, Clegg W. Dilithio-1,1,2-tris(diphenylphosphinoyl)ethane-1,2-diide: The first formal 1,2-dicarbanion stabilised by phosphorus?. Chemical Communications 2002, (21), 2532-2533.
• Izod K, O'Shaughnessy P, Clegg W, Liddle ST. Regioselective metalation of a tertiary phosphine. Synthesis and structural characterization of an unusual tetramerie lithium phosphinomethanide. Organometallics 2001, 20(4), 648-653.
• Izod K, Clegg W, Liddle ST. The first structurally authenticated Rb-PR3 and Cs-PR3 contacts. Synthesis and crystal structures of [Rb{(Me3Si)2CP(C6H4-2-CH2 NMe2)2}]n and [Cs{(Me3Si)2CP(C6H4-2-CH2 NMe2)2}(toluene)]n. Organometallics 2001, 20(3), 367-369.
• Izod K, Clark ER, Foster P, Percival RJ, Riddlestone IM, Clegg W, Harrington RW. Light-induced rearrangement of thioether-substituted phosphanide ligands: scope and limitations of a remarkable isomerization. Chemistry: A European Journal 2013, 19(19), 6094-6107.
• Izod K, Watson JM, Clegg W, Harrington RW. Phosphido-Borane and Phosphido-Bis(Borane) Complexes of the Alkali Metals, a Comparative Study. Inorganic Chemistry 2013, 52(3), 1466-1475.
• Izod K, Wills C, Harrington RW, Clegg W. Synthesis and structural characterisation of an unusual phosphine-borane-substituted organoplumbate. Journal of Organometallic Chemistry 2013, 725, 11-14.
• Izod K. Heavier group 14 complexes with anionic P-donor ligands. Coordination Chemistry Reviews 2012, 256(23-24), 2972-2997.
• Izod K, Clark ER, Clegg W, Harrington RW. Hypervalent Sulfur-Functionalized Diphosphagermylene and Diphosphastannylene Compounds. Organometallics 2012, 31(1), 246-255.
• Izod K, Wills C, Harrington RW, Clegg W. Agostically-stabilized dialkylstannylenes and plumbylenes. In: Abstracts of Papers of the American Chemical Society: 241st National Meeting of the American Chemical Society. 2011, Anaheim, California, USA: American Chemical Society.
• Izod K, Clark ER, Stewart J. Edge- Versus Vertex-Inversion at Trigonal Pyramidal Ge(II) Centers – a New Aromatic Anchimerically Assisted Edge-Inversion Mechanism. Inorganic Chemistry 2011, 50(8), 3651-3661.
• Izod K, Watson JM, Clegg W, Harrington RW. Synthesis, structures and stabilities of thioanisole-functionalised phosphido-borane complexes of the alkali metals. Dalton Transactions 2011, 40(44), 11712-11718.
• Blair S, Izod K, Clegg W. A homologous series of alkaline earth phosphanides: Syntheses, crystal structures, and unusual dynamic behavior of (THF),nM[P{CH(Si-Me3)2} (C6H4-2-CH2NMe2)]2 (M = Mg, Ca, Sr, Ba). Inorganic Chemistry 2002, 41(15), 3886-3893.
• Izod K. A new era in divalent organolanthanide chemistry?. Angewandte Chemie: International Edition 2002, 41(5), 743-744.
• Izod K. Complexes of P-stabilised carbanions with s- and p-elements. Coordination Chemistry Reviews 2002, 227(2), 153-173.
• Blair S, Izod K, Taylor R, Clegg W. Isolation and structural characterisation of two sterically crowded diphosphanes. Journal of Organometallic Chemistry 2002, 656(1-2), 43-48.
• Izod K, O'Shaughnessy P, Clegg W. Unusual solvent-promoted smiles rearrangement of two different phosphorus-containing organolithium compounds to the same lithium phosphide. Crystal structure of MeP{C6H4-2-CH(C6H4-2-CH2N Me2)NMe2}Li(THF)2. Organometallics 2002, 21(4), 641-646.
• Izod K. Group I complexes of P- and as-donor ligands. Advances in Inorganic Chemistry 2000, 50, 33-107.
• Eaborn C, Hitchcock PB, Smith JD, Zhang S, Clegg W, Izod K, O'Shaughnessy P. Manganese and cesium derivatives of the bulky bidentate ligand C(SiMe3)2SiMe2CH2CH 2Me2Si(Me3Si)2C. Crystal structures of Li(THF)2.75(Et2O)0.25(μ-Cl)-MnC(SiMe 3)2SiMe2CH2CH2Me 2Si(Me3Si)2C. Organometallics 2000, 19(6), 1190-1193.
• Eaborn C, Hitchcock PB, Smith JD, Zhang SB, Clegg W, Izod K, O'Shaughnessy P. Manganese and Cesium Derivatives of the Bulky Bidentate Ligand C(SiMe3)2SiMe2CH2CH2Me2Si(Me3Si)2C. Crystal Structures of Li(THF)2.75(Et2O)0.25(μ-Cl)- MnC(SiMe3)2SiMe2CH2CH2Me2Si(Me3Si)2C and (C6H6)3CsC(SiMe3)2SiMe2CH2CH2Me2Si(Me3Si)2CCs(C6H6)3. Organometallics 2000, 19(6), 1190-1193.
• Izod K, Clegg W, Liddle ST. Parallels between the chemistry of alkoxo-phosphidecalcium(II) and ytterbium(II). Synthesis and crystal structure of a calcium alkoxo-phosphide cuboidal complex. Organometallics 2000, 19(18), 3640-3643.
• Clegg W, Izod K, Liddle ST. Synthesis and crystal structure of a homoleptic, alkali metal-free lanthanide(II) phosphide complex. Journal of Organometallic Chemistry 2000, 613(1), 128-131.
• Izod K, O'Shaughnessy P, Sheffield JM, Clegg W, Liddle ST. Synthesis and structural characterization of Sm(II) and Yb(II) complexes containing sterically demanding, chelating secondary phosphide ligands. Inorganic Chemistry 2000, 39(21), 4741-4748.
• Clegg W, Izod K, Liddle ST, O'Shaughnessy P, Sheffield JM. Synthesis and structural characterization of the first lanthanide(II) cuboidal cluster. Unexpected C-O activation by an unchanged ytterbium(II) center. Organometallics 2000, 19(11), 2090-2096.
• Stuart Hill MN, Izod K, O'Shaughnessy P, Clegg W. Synthesis, structures, and solution dynamics of functionalized phosphinomethanide complexes of the alkali metals. Organometallics 2000, 19(22), 4531-4535.
• Clegg W, Izod K, O'Shaughnessy P. First structurally authenticated heavier alkali metal phosphinomethanide. Organometallics 1999, 18(16), 2939-2940.
• Clegg W, Doherty S, Izod K, Kagerer H, O'Shaughnessy P, Sheffield JM. Monomeric alkali metal complexes of a sterically demanding, donor-functionalised secondary phosphide ligand. Journal of the Chemical Society - Dalton Transactions 1999, (11), 1825-1829.
• Clegg W, Izod K, McFarlane W, O'Shaughnessy P. Regioselective metalation of a tertiary phosphine. Solution and solid-state structures of an unusual aminobenzyllithium complex. Organometallics 1999, 18(20), 3950-3952.
• Al-Juaid SS, Eaborn C, El-Hamruni S, Farook A, Hitchcock PB, Hopman M, Smith JD, Clegg W, Izod K, O'Shaughnessy P. Tris(triorganosilyl)methyl derivatives of potassium and lithium bearing dimethylamino or methoxy substituents at silicon. Crystal structures of KC(SiMe3)2(SiMe2NMe2), KC(SiMe2NMe2)3 and [LiC(SiMe3)(SiMe2OMe)2]2. Journal of the Chemical Society - Dalton Transactions 1999, (18), 3267-3273.