Imperial College London

ProfessorPatriciaHunt

Faculty of Natural SciencesDepartment of Chemistry

Visiting Professor
 
 
 
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Contact

 

p.hunt Website

 
 
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Location

 

Molecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Publication Type
Year
to

87 results found

Hunt PA, Kirchner B, Gould IR, 2007, The Structure of Imidazolium-Based Ionic Liquids: Insights From Ion-Pair Interactions, Australian Journal of Chemistry, Vol: 60, Pages: 9-14-9-14

Journal article

Britovsek GJP, Ugolotti J, Hunt P, White AJPet al., 2006, Lewis and Bronsted multifunctionality: an unusual heterocycle from the reaction of bis(pentafluorophenyl)borinic acid with nitriles, Chem. Commun., Pages: 1295-1297-1295-1297

The combination of Lewis and Bronsted acidity as well as Lewis basicity in (CF)BOH results in a remarkable reactivity towards organonitriles to give novel heterocyclic compounds containing a BOBOCN six-membered ring.

Journal article

Kossmann S, Thar J, Kirchner B, Hunt PA, Welton Tet al., 2006, Cooperativity in ionic liquids, The Journal of Chemical Physics, Vol: 124, Pages: 174506-174506

Journal article

Hunt PA, Gould IR, 2006, Structural Characterization of the 1-Butyl-3-methylimidazolium Chloride Ion Pair Using ab Initio Methods, The Journal of Physical Chemistry A, Vol: 110, Pages: 2269-2282-2269-2282

Journal article

Hunt PA, Kirchner B, Welton T, 2006, Characterising the Electronic Structure of Ionic Liquids: An Examination of the 1-Butyl-3-Methylimidazolium Chloride Ion Pair, Chemistry � A European Journal, Vol: 12, Pages: 6762-6775, ISSN: 1521-3765

Journal article

Hunt PA, 2006, The simulation of imidazolium-based ionic liquids, Molecular Simulation, Vol: 32, Pages: 1-10-1-10

Journal article

Hunt P, Sprik M, 2005, On the Position of the Highest Occupied Molecular Orbital in Aqueous Solutions of Simple Ions, ChemPhysChem: a European journal of chemical physics and physical chemistry, Vol: 6, Pages: 1805-1808, ISSN: 1439-7641

Journal article

Hunt PA, Robb MA, 2005, Systematic Control of Photochemistry: The Dynamics of Photoisomerization of a Model Cyanine Dye, Journal of the American Chemical Society, Vol: 127, Pages: 5720-5726-5720-5726

Journal article

Blancafort L, Hunt P, Robb MA, 2005, Intramolecular Electron Transfer in Bis(methylene) Adamantyl Radical Cation: A Case Study of Diabatic Trapping, Journal of the American Chemical Society, Vol: 127, Pages: 3391-3399-3391-3399

Journal article

Weingart O, Migani A, Olivucci M, Robb MA, Buss V, Hunt Pet al., 2004, Probing the Photochemical Funnel of a Retinal Chromophore Model via Zero-Point Energy Sampling Semiclassical Dynamics, The Journal of Physical Chemistry A, Vol: 108, Pages: 4685-4693-4685-4693

Journal article

Hunt P, Sprik M, Vuilleumier R, 2003, Thermal versus electronic broadening in the density of states of liquid water, Chemical Physics Letters, Vol: 376, Pages: 68-74, ISSN: 0009-2614

Journal article

Worth GA, Hunt P, Robb MA, 2003, Nonadiabatic Dynamics: A Comparison of Surface Hopping Direct Dynamics with Quantum Wavepacket Calculations, The Journal of Physical Chemistry A, Vol: 107, Pages: 621-631-621-631

Journal article

Paterson MJ, Hunt PA, Robb MA, Takahashi Oet al., 2002, Non-Adiabatic Direct Dynamics Study of Chromium Hexacarbonyl Photodissociation, The Journal of Physical Chemistry A, Vol: 106, Pages: 10494-10504-10494-10504

Journal article

Boggio-Pasqua M, Bearpark MJ, Hunt PA, Robb MAet al., 2002, Dihydroazulene/Vinylheptafulvene Photochromism: A Model for One-Way Photochemistry via a Conical Intersection, Journal of the American Chemical Society, Vol: 124, Pages: 1456-1470-1456-1470

Journal article

Robb MA, Blancafort L, Fernandez E, Hunt P, Olivucci Met al., 2001, Conical intersections in non-adiabatic chemistry: Applications to photochemical and electron transfer processes., ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol: 221, Pages: U292-U292, ISSN: 0065-7727

Journal article

Wesendrup R, Hunt T, Schwerdtfeger P, 2000, Relativistic coupled cluster calculations for neutral and singly charged Au[sub 3] clusters, The Journal of Chemical Physics, Vol: 112, Pages: 9356-9362-9356-9362

Journal article

Sanchez-Galvez A, Hunt P, Robb MA, Olivucci M, Vreven T, Schlegel HBet al., 2000, Ultrafast radiationless deactivation of organic dyes: Evidence for a two-state two-mode pathway in polymethine cyanines (Abstract), Journal of the American Chemical Society, Vol: 122, Pages: 2911-2924

Journal article

Hunt P, Schwerdtfeger P, 1999, Symmetry-Broken Inversion Structures for Group 15 EX3 Halides, Advances in Molecular Structure Research, Editors: Hargittai, Hargittai

Book chapter

Nielson AJ, Hunt PA, Rickard CEF, Schwerdtfeger Pet al., 1997, d<sup>2</sup> Complexes of tungsten containing p-toluonitrile as a four- or two-electron donor and oxidative addition giving the two-electron donor acylimido ligand NCOC<inf>6</inf>H<inf>4</inf>Me-4, Journal of the Chemical Society - Dalton Transactions, Pages: 3311-3317, ISSN: 0300-9246

Reaction of benzonitrile with WCl6 in the presence of CCl2CCl2 gave the complex [{WCl4(NCPh)}x] of undetermined structure which does not show equivalent chemistry to the d0 complexes [{WCl4(PhC2Ph)}2] and [{WCl4(NPh)}2]. The complex [WCl2(η2-NCC6H4Me-4)(PMe 3)3] 1 can be prepared by reduction of [WCl4(PMe3)3] with 2 equivalents of Na/Hg amalgam in the presence of p-toluonitrile. The nitrile carbon in the 13C-{1H} NMR spectrum appears at δ 232.2 consistent with a four-electron donor nitrile ligand. Reaction of [WCl2(NC6H3Pri2-2,6)(PMe3)3] with purified p-toluonitrile in refluxing toluene or reduction of [WCl3(NC6H3Pri2-2,6)(PMe3)2] in benzene with 1 equivalent of Na/Hg amalgam in the presence of p-toluonitrile led to [WCl3(NC6H3Pri2-2,6)(η2-NCC6H4Me-4)(PMe 3)J 2 as shown by 1H, 13C-{1H} and 31P-{1H} NMR spectroscopy. The position of the nitrile carbon in the 13C-{1H} NMR spectrum (δ 178.9) is consistent with a two-electron donor nitrile ligand. Reaction of [WCl2(NC6H3Pri2-2,6)(PMe3)3] with unpurified p-toluonitrile gave [WCl2(NC6H3Pri2-2,6)(NCOC6H4Me-4)-(OPMe3)(PMe 3)] 3 in addition to 2. A crystal structure determination showed cis orientated imido and acylimido ligands [W-N 1.769(5) and 1.823(6) Å, W-N-C 174.5(5) and 158.9(5)°], cis-chloro ligands and a cis orientation of the PMe3 and OPMe3 ligands. The bond lengths and angles about the NCOPh function are not significantly different to those of a variety of uncomplexed organic amide groups. Hartree-Fock and density-functional calculations performed on the model complex [WCl2(NMe)(NCOH)(OPH3)(PH3)] 4 showed structural parameters in good agreement with those of 3 when the phenyl groups were removed. An NBO (natural bond orbital) analysis of the W-NMe bond generated one σ and two π bonds between nitrogen s and p atomic orbitals (AOs) and tungsten d AOs. The nitrogen of the NCOH ligand binds to tungsten via one σ and one π bond. In contrast to the NMe ligand, the NBO anal

Journal article

Hubler K, Hunt PA, Maddock SM, Rickard CEF, Roper WR, Salter DM, Schwerdtfeger P, Wright LJet al., 1997, Examination of Metal-Silicon Bonding through Structural and Theoretical Studies of an Isostructural Set of Five-Coordinate Silyl Complexes, Os(SiR3)Cl(CO)(PPh3)2 (R = F, Cl, OH, Me), Organometallics, Vol: 16, Pages: 5076-5083-5076-5083

Journal article

J Nielson A, A Hunt P, E F Rickard C, Schwerdtfeger Pet al., 1997, d2 Complexes of tungsten containing p-toluonitrile as a four- or two-electron donor and oxidative addition giving the two-electron donor acylimido ligand NCOC6H4Me-4, J. Chem. Soc., Dalton Trans., Pages: 3311-3318-3311-3318

Journal article

Hunt PA, Fischer T, Schwerdtfeger P, 1997, Trends in Inversion Barriers of Group 15 Compounds. 3. Are Fluorinated Pyridone Derivatives Planar or Nonplanar?, Journal of Organic Chemistry, Vol: 62, Pages: 8063-8070-8063-8070

Journal article

Hunt P, Schwerdtfeger P, 1996, Are the Compounds InH3 and TlH3 Stable Gas Phase or Solid State Species?, Inorganic Chemistry, Vol: 35, Pages: 2085-2088-2085-2088

Journal article

NIELSON AJ, BOYD PDW, CLARK GR, HUNT PA, HURSTHOUSE MB, METSON JB, RICKARD CEF, SCHWERDTFEGER PAet al., 1995, HIGH-VALENT DIPHENYLACETYLENE COMPLEXES OF TUNGSTEN, DALTON TRANSACTIONS, Pages: 1153-1161, ISSN: 0300-9246

The W(4f(7/2)) binding energy of [{WCl4(PhC(2)Ph)}(2)] 1 obtained by X-ray photoelectron spectroscopy is similar to that of [{WCl4(NPh)}(2)] and is consistent with a d(0) tungsten (VI) formulation. The reaction of complex 1 and [NEt(4)][WCl5(PhC(2)Ph)] 2 with NaOH-EtOH gave cis-stilbene indicating considerable electron transfer from the metal to the co-ordinated alkyne. Reduction of complex 1 with 2 equivalents of sodium-mercury amalgam in the presence of phosphines gave the complexes [WCl3(PhC(2)Ph)L(2)] (L = PMe(3), PMe(2)Ph or PMePh(2)) with magnetic moments and W(4f(7/2)) binding energies similar to those of the d(1) tungsten(V) organoimido complex [WCl3(NPh)(PMe(3))(2)]. Decomposition of the alkyne complexes with NaOH-EtOH again gave cis-stilbene. The crystal structure of [WCl3(PhC(2)Ph)(PMe(3))(2)] 3 has been determined. The W-Cl bond trans to the alkyne ligand is long [2.479(3) Angstrom], and the W-C bond lengths [2.011(13) and 2.038(12) Angstrom] indicate a four-electron-donor alkyne ligand. The geometry is similar to that of [WCl3(NPh)(PMe(3))(2)]. Reduction of [{WCl4(PhC(2)Ph)}2] using 4 equivalents of sodium-mercury amalgam in the presence of phosphines gave the complexes [WCl2(PhC(2)Ph)L(3)] (L = PMe(3) or PMe(2)Ph) which again produced cis-stilbene on decomposition with NaOH-EtOH. The acetylenic carbon resonance at delta 223.15 in the C-13-{H-1} NMR spectrum of [WCl2(PhC(2)Ph)(PMe(3))(3)] 6 is also indicative of a four-electron-donor alkyne ligand. its W(4f(7/2)) binding energy is similar to [WCl2(NPh)(PMe(3))(3)] and is consistent with tungsten(IV). A crystal structure of complex 6 shows a similar ligand geometry to [WCl2(NPh)(PMe(3))(3)], and the W-C bond lengths [2.019(11) and 2.006(11) Angstrom] indicate a four-electron-donor alkyne ligand. Hartree-Fock and scattered wave X alpha calculations have been performed on the model complexes [WCl5(HC2H)](-) 8, [WCl3(HC2H)(PH3)(2)] 9 and [WCl2(HC2H)(PH3)(3)] 10. Molecular orbital and population analyses ind

Journal article

Nielson AJ, Boyd PDW, Clark GR, Hunt PA, Metson JB, Rickard CEF, Schwerdtfeger Pet al., 1995, A d0 to d2 transformation of tungsten, promoted by formation of an organoimido ligand and involving disruption of the ��-perpendicular bonding component of co-ordinated diphenylacetylene, Polyhedron, Vol: 14, Pages: 1255 - 1257-1255 - 1257, ISSN: 0277-5387

Journal article

Schwerdtfeger P, Boyd PDW, Fischer T, Hunt P, Liddell Met al., 1994, Trends in Inversion Barriers of Group 15 Compounds. 2. Ab-Initio and Density Functional Calculations on Group 15 Fluorides, Journal of the American Chemical Society, Vol: 116, Pages: 9620-9633-9620-9633

Journal article

Nielson AJ, Boyd PDW, Clark GR, Hunt TA, Metson JB, Rickard CEF, Schwerdtfeger Pet al., 1992, Evidence for high oxidation state character in tungsten alkyne complexes, Polyhedron, Vol: 11, Pages: 1419-1421

Journal article

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