Ian Henderson WILLIAMS

Publications (May 2008)

In preparation

Computational active site-directed mutagenesis reveals substrate sugar ring distortion of endo-b-1,4-xylanase: a QM/MM MD analysis.

M. E. S. Soliman, G. D. Ruggiero, J. J. Ruiz-Pernia, I. R. Greig and Ian H. Williams

Conformational topography of halomethanediols XCH(OH)2 (X = H, F, Cl): a computational study.

M. Martínez-Avilés, J. S. Francisco and Ian H. Williams

2008

111 Dyotropic rearrangement of a-lactone to b-lactone: a computational study of small-ring halolactonisation.

J. G. Buchanan, G. D. Ruggiero and I. H. Williams
Org. Biomol. Chem. (2008) 6, 66 – 72.

2007

110 Experimental and computational evidence for a-lactone intermediates in the addition of aqueous bromine to disodium dimethyl-maleate and fumarate.

N. Pirinççioğlu, J. J. Robinson, M. F. Mahon, J. G. Buchanan and I. H. Williams
Org. Biomol. Chem.
(2007) 5, 4001-4009.

109 Glycosidase inhibitors as conformational transition state analogues.

I. R. Greig and I. H. Williams,
Chem. Commun. (2007) 3747-3749.

108 Computational investigation of mechanisms for ring-opening polymerization of -caprolactone: evidence for bifunctional catalysis by alcohols.

N. Buis, S. A. French, G. D. Ruggiero, B. Stengel, A. A. D. Tulloch and I. H. Williams,
J. Chem. Theor. Comput. (2007) 3, 146-155.

2006

107 Theoretical simulations of free-energy relationships in proton transfer.

I. H. Williams,
in
Handbook of Hydrogen Transfer, volume 1 (Chemical and Physical Aspects of Hydrogen Transfer); Wiley-VCH, Weinheim, 2006, pp. 583-602.

106 The Walden cycle revisited: a computational study of competitive ring closure to a- and b-lactones.

          J. G. Buchanan, R. A. Diggle, G. D. Ruggiero and I. H. Williams,
Chem. Commun. (2006)
1106 - 1108.

2005

105 Dependence of enzyme reaction mechanism on protonation state of titratable residues and QM level description: lactate dehydrogenase.

S. Ferrer, E. Silla, I. Tuñón, M. Oliva, V. Moliner and I. H. Williams,
Chem. Commun. (2005) 5873-5875.

104 High-level ab initio studies of the structure, vibrational spectra, and energetics of S3.

J. S. Francisco, J. R. Lyons and I. H. Williams,
J. Chem. Phys. (2005) 123 (5): Art. No. 054302 Aug 1 2005. (6 pp.)

103 Computing kinetic isotope effects for chorismate mutase with high accuracy. a new DFT/MM strategy.

S. Martí, V. Moliner, I. Tuñón and I. H. Williams,
J. Phys. Chem. (2005) 109. 3707-3710.

2004

102 QM/MM determination of kinetic isotope effects for COMT-catalysed methyl transfer does not support compression hypothesis.

G. D. Ruggiero, I. H. Williams, M. Roca, V. Moliner, and I. Tuñón,
J. Am. Chem. Soc. (2004) 126, 8634 – 8635.

101 Vibrational analysis of the chorismate rearrangement: relaxed force constants, isotope effects, and activation entropies calculated for reaction in vacuum, water, and the active site of chorismate mutase.

G. D. Ruggiero, S. J. Guy, S. Martí, V. Moliner, and I. H. Williams,
J. Phys. Org. Chem. (2004) 17, 592 – 601.

2003

100 Theoretical modelling of enzyme catalytic power: analysis of cratic and electrostatic factors in catechol O-methyl transferase.

M. Roca, S. Martí, J. Andres, V. Moliner, I. Tuñón, J. Bertran and I. H. Williams,
J. Am. Chem. Soc. (2003) 125, 7726 – 7737.

99   QM/MM calculations on kinetic isotope effects in the chorismate mutase active site.
   S. Mart
í, V. Moliner, I. Tuñón and I. H. Williams, Org. Biomol. Chem. (2003) 1, 483-487.

2002

98   A hybrid QM/MM method: application to hydration free energy calculations.

T. Shoeib, G. D. Ruggiero, K. W. M. Siu, A. C. Hopkinson and I. H. Williams, J. Chem. Phys. (2002) 117, 2762-2770.

97   Experimental and computational studies of a-lactones.
  J. G. Buchanan, M. H. Charlton, M. F. Mahon, J. J. Robinson, G. D. Ruggiero and I. H. Williams,
  J. Phys. Org. Chem. (2002) 15, 642-646.

96   Computational study of electrophilic addition to acrylate anion: cyclic halonium is the transition structure for interconversion of a-lactones.
   G. D. Ruggiero and I. H. Williams, Chem. Commun. (2002) 732-733.

95   Kinetic isotope effects for gas phase SN2 methyl transfer: a computational study of anionic and cationic identity reactions.
   G. D. Ruggiero and I. H. Williams, J. Chem. Soc., Perkin Trans. 2 (2002) 591-597.

94   Rearrangement of the 1-oxaspiro[4.5]deca-6,9-dien-8-ylium ion. Part 1. A semiempirical (AM1), density functional and ab initio molecular orbital computational study.
  C. W. McCleland, G. D. Ruggiero and I. H. Williams, J. Chem. Soc., Perkin Trans. 2 (2002) 204-208.

2001

93   Oxiranones: a-lactones or zwitterions? Insights from calculated electron density distribution analysis.
   G. D. Ruggiero and I. H. Williams, J. Chem. Soc., Perkin Trans. 2 (2001) 733-738.

92   Evidence for a-lactone intermediates in addition of aqueous bromine to disodium dimethyl maleate and fumarate.
   J. J. Robinson, J. G. Buchanan, M. H. Charlton, R. G. Kinsman, M. F. Mahon, and I. H. Williams, Chem. Commun. (2001) 485 –486.

91   Computational investigation of the effect of a-alkylation on SN2 reactivity: acid-catalyzed hydrolysis of alcohols.
   G. D. Ruggiero and I. H. Williams, J. Chem. Soc., Perkin Trans. 2 (2001) 448 – 458.

2000

90   Influence of compression upon kinetic isotope effects for SN2 methyl transfer: a computational reappraisal.
   V. Moliner and I. H. Williams, J. Am. Chem. Soc. (2000) 122, 10895 – 10902.

89   Flexible QM/MM modelling embraces alternative mechanisms for lactate dehydrogenase.
   V. Moliner and I. H. Williams, J. Chem. Soc., Chem. Commun. (2000) 1843 – 1844.

1999

88   Theoretical simulation of Brønsted correlations for proton transfer and methyl transfer: the significance of the Brønsted coefficient b.
   I.H. Williams and P.A. Austin, Canad. J. Chem. (1999) 77, 830 – 841.

87   Transition-state structural refinement with GRACE and CHARMM: Flexible QM/MM modelling for lactate dehydrogenase.
   A. J. Turner, V. Moliner and I.H. Williams, Phys. Chem. Chem. Phys. (1999) 1, 1323 – 1331.

1998

86   Theoretical estimation of the activation energy for the reaction HO. + H2O ® H2O + .OH: importance of tunnelling.
   M.R. Hand, C.F. Rodriquez, I.H. Williams & G.G. Balint-Kurti, J. Phys. Chem.A (1998) 102, 5958 – 5966.

1997

85   Hydroxyoxiranone: an ab initio MO investigation of the structure and stability of a model for a possible a-lactone intermediate in hydrolysis of sialyl glycosides.
   Stuart Firth-Clark, Christopher F. Rodriquez and Ian H. Williams, J. Chem. Soc., Perkin Trans. 2 (1997) 1943 – 1948.

84   Transition-state structural refinement with GRACE and CHARMM: realistic modelling of lactate dehydrogenase using a combined quantum/classical method.
   V. Moliner, A. J. Turner and I. H. Williams, J. Chem. Soc., Chem. Commun. (1997) 1271 – 1272.

83   Ring strain energy and enthalpy of formation of oxiranone: an ab initio theoretical determination.
   C. F. Rodriquez and I. H. Williams, J. Chem. Soc., Perkin Trans. 2 (1997) 959 – 965.

82   Ab initio theoretical investigation of the mechanism for a-lactone formation from a-halocarboxylates: leaving group, substituent, solvent and isotope effects.
   C. F. Rodriquez and I. H. Williams, J. Chem. Soc., Perkin Trans. 2 (1997) 953 – 957.

1996

81   Ab initio study of the electronic spectrum of HOBr.
   J. S. Francisco, M. R. Hand and I.H. Williams, J. Phys. Chem. (1996) 100, 9250-9253.

80   Pressure dependence and metastable state formation in the photolysis of dichlorine monoxide.
   S. L. Nickolaisen, C. E. Miller, S. P. Sander, M. R. Hand, I.H. Williams and J. S. Francisco, J. Chem. Phys. (1996) 104, 2857-2868.

79   Quantum-mechanical/molecular-mechanical approaches to transition-state structure: mechanism of sialidase action.
   J. A. Barnes and I. H. Williams, Biochem. Soc. Trans. (1996) 24, 263-268.

78   Theoretical modelling of kinetic isotope effects for glycoside hydrolysis in aqueous solution by a hybrid quantum-mechanical/molecular-mechanical method.
   J. A. Barnes and I. H. Williams, J. Chem. Soc., Chem. Commun. (1996)193-194.

1995

77   Geometrical preferences for general acid-catalyzed hydride transfer: comparative theoretical study of transition structures for concerted reduction of formaldehyde.
   J. Wilkie and I.H. Williams, J. Chem. Soc., Perkin Trans. 2 (1995) 1559-1567.

76   Theoretical modelling of organic reaction mechanisms,

          I. H. Williams, ULCC Annual Report 1993/94, in press.

75   Atmospheric chemistry of organic halides,
   J. S. Francisco and I. H. Williams, The Chemistry of Functional Groups, Supplement D2: The Chemistry of Halides, Pseudo-Halides and Azides, eds. S. Patai & Z. Rappoport, Wiley, 1995, ch. 26, pp. 1559-1583.

74   Biomolecular modelling,
   I. H. Williams, Review of Supercomputing 1991-1994, EPSRC, Swindon (publ. 1995).

73   Potential energy surfaces for the hydrolysis of a model for adenosine monophosphate,
   J. A. Barnes and I. H. Williams, AIP Conf. Proc. 330, E.C.C.C 1 Comput. Chem., Nancy, 1994, American Institute of Physics: Woodbury, NY, 1995, pp. 134-139.

1994

72   Computational elucidation of the catalytic mechanism for ketone reduction by an oxazaborolidine–borane adduct,
   L. P. Linney, C. R. Self and I. H. Williams, J. Chem. Soc., Chem. Commun. (1994) 1651-1652.

71   A theoretical investigation of hydride-bridging in chiral oxazaborolidine–borane adducts:
the importance of electron correlation,
   L. P. Linney, C. R. Self and I. H. Williams, Tetrahedron Asymmetry (1994) 5, 813-816.

70   Transition-state structural variation and mechanistic change,
   J.A. Barnes, J. Wilkie and I.H. Williams, J. Chem. Soc., Faraday Trans. (1994) 90, 1709-1714.

1993

69   Theoretical modelling of mechanisms for glycoside hydrolysis.
   J.A. Barnes and I.H. Williams, Organic Reactivity: Physical and Biological Aspects (Proc. ESOR-IV/MMBP-II, Newcastle, 1993), eds. B. T. Golding, R. J. Griffin and H. Maskill, Royal Society of Chemistry, 1995, pp. 437-443.

68   A complete-active-space self-consistent field and density functional study of FNO.
   T.S. Dibble, J.S. Francisco, R.J. Deeth, M.R. Hand & I.H. Williams, J. Chem. Phys.(1994) 100, 459-463.

67   Characterization of the first excited electronic state of carbonyl fluoride: is it planar or non-planar?
   J.S. Francisco, Z. Li, M.R. Hand and I.H. Williams, Chem. Phys. Lett. (1993) 214, 591-597.

66   Interplay of theory and experiment in the determination of transition-state structure.
   I.H. Williams, Chem. Soc. Rev. (1993) 22, 277-283.

65   Theoretical investigation of the origin of secondary a-deuterium kinetic isotope effects.
   J.A. Barnes and I.H. Williams, J. Chem. Soc., Chem. Commun. (1993) 1286-1287.

64   Reaction pathways for gas-phase hydrolysis of HXCO compounds: HXCO + H2O ® CHX(OH) 2 ® products.
   J.S. Francisco and I.H. Williams, J. Am. Chem. Soc. (1993) 115, 3746-3751.

63   Thermochemistry of possible degradation pathways for compounds CF3CHXY (X,Y = H,F, Cl) using AM1 and MNDO semiempirical methods.
   J.S. Francisco, W.A. Ghoul and I.H. Williams, J. Mol. Struct., (Theochem) (1993) 98, 35-39.

1992

62   Infrared and ultraviolet spectroscopic characterisation of trifluoroacetaldehyde.
     J.S. Francisco and I.H. Williams, Molec. Phys. (1992) 76, 1433-1441.

61   Structural and spectral consequences of ion pairing. 5. BH4-Li+ and BH4-Na+
   J.S. Francisco and I.H. Williams, J. Phys. Chem. (1992) 96, 7567-7570.

60   A re-examination of the infrared and ultraviolet spectroscopy of trifluoroacetyl fluoride and trifluoroacetyl chloride – an experimental and theoretical study.
   J.S. Francisco and I.H. Williams, Spectrochim. Acta Part A - Mol. Spectrosc. (1992) 48, 1115-1126.

59   Ab initio valence bond study of the origin of barriers to hydrogen exchange reactions.
   P.R. Benneyworth, G.G. Balint-Kurti, M.J. Davis & I.H. Williams, J. Phys. Chem.(1992) 96, 4346-4353.

58   Barrier heights for hydrogen-atom transfer reactions. Evaluation of ab initio MO methods for the degenerate exchange HO. + H2O ® H2O + .OH
   A.A. Nanayakkara, G.G. Balint-Kurti and I.H. Williams, J. Phys. Chem.(1992) 96, 3662-3669.

57   Transition-state structural variation in a model for carbonyl reduction by lactate dehydrogenase: computational validation of empirical predictions based upon Albery-More O'Ferrall-Jencks diagrams.
   J. Wilkie and I.H. Williams, J. Am. Chem. Soc. (1992) 114, 5423-5425.

56   Theoretical characterization of low-lying electronic states of FCO.
   J.S. Francisco, A.N. Goldstein, M.A. Robb and I.H. Williams, Chem. Phys. Lett. (1992) 191, 13-22.

55   Structural and spectral consequences of ion pairing. 6. BO2-Li+ and BO2-Na+
   J.S. Francisco and I.H. Williams, Chem. Phys.(1992) 160, 255-263.

54   Theoretical studies of the structure and thermochemistry of FO2 radical: comparison ofMøller-Plesset perturbation, CASSCF and QCI methods.
   J.S. Francisco, Y. Zhao, W.A. Lester and I.H. Williams, J. Chem. Phys.(1992) 96, 2861-2867.

1991

53   A theoretical study of the A 2A1 ® X 2E transition in trifluoromethoxy radical.
   J.S. Francisco, Z. Li and I.H. Williams, Chem. Phys. Lett.(1991) 186, 343-345.

52   A theoretical comparison of primary deuterium kinetic isotope effects in analogous hydride and hydron transfer processes.
   A.E. Pain and I.H. Williams, J. Chem. Soc., Chem. Commun. (1991) 1417-1418.

51   Nucleophilic addition to nitrile oxides: concerted or stepwise?
   M.T. Nguyen, S. Malone, A.F. Hegarty and I.H. Williams, J. Org. Chem. (1991) 56, 3683-3687.

50   Theoretical perspectives on proton transfer and bifunctional catalysis.
   I.H. Williams, l'Actualite Chimique (1991) 27-31.

49   Theoretical studies of hydride-transfer reactivity: transition structures and the origin of chemical reaction barriers.
   I.H. Williams, J. Mol. Struct., Theochem (1991) 230, 339-347.

1990

48   Organic reactivity: new light on old concepts.

          D.L. Cooper, M.A. Robb and I.H. Williams, Chemistry in Britain (1990) 26, 1085-1089.

47   Theoretical organic chemistry.
   I.H. Williams, Annual Rep. Prog. Chem., Sect. B, Org. Chem. 1989 (Publ. 1990) 86, 33-43.

46   Structural and spectral consequences of ion-pairing. 4. Theoretical study of BF4-M+ (M = Li, Na, K & Rb).
   J.S. Francisco and I.H. Williams, J. Phys. Chem. (1990) 94, 8522-8529.

45   Theoretical investigation of chlorofluorocarbon degradation processes: structures and energetics of XC(O)Ox intermediates (X = F, Cl).
   J.S. Francisco, A.N. Goldstein, Z. Li, Y. Zhao and I.H. Williams, J. Phys. Chem. (1990) 94, 4791-4795.

44   Deuterium fractionation factors for carbon-hydrogen bonds: calculations using scaled quantum-mechanical force constants.
   I.H. Williams, J. Phys. Org. Chem. (1990) 3, 181-190.

43   Reaction-surface topography for hydride transfer: ab initioMO studies of isoelectronic systems CH3O- + CH2O and CH3NH2 + CH2NH2+.
   I.H. Williams, A.B. Miller and G.M. Maggiora, J. Am. Chem. Soc. (1990) 112, 530-537; 7835.

1989

42   Theoretical organic chemistry.
   I.H. Williams, Annual Rep. Prog. Chem., Sect. B, Org. Chem. 1988 (Publ. 1989) 85, 27-38.

41   New perspectives on the effect of halocarbon degradation in ozone formation and destruction in stratospheric chemistry: thermochemical consideration of oxidation processes for trihalomethyl radicals.
   J.S. Francisco & I.H. Williams, Proc. 16th Ann. Mtg. Nat. Org. Black Chem. Chem. Eng.,Chicago, IL (1989)
Vol. 16, pp 59-72.

1988

40   Theoretical evaluation of kinetic stereoelectronic effects on hydride transfer.
   A.E. Pain and I.H. Williams, J. Chem. Soc., Chem. Commun. (1988) 1367-1368.

39   Theoretical chemistry.
   I.H. Williams, Annual Rep. Prog. Chem., Sect. B, Org. Chem. 1987 (Publ. 1988) 84, 25-40.

38   Dissociation dynamics of FCO and HCO radicals.
   J.S. Francisco, A.N. Goldstein and I.H. Williams, J. Chem. Phys. (1988) 89, 3044-3049.

37   Bronsted exponents and activated-complex structure: an AM1 SCF-MO theoretical simulation of a rate-equilibrium correlation for transfer of the methoxycarbonyl group between isoquinoline and substituted pyridines.
   R.B. Hammond and I.H. Williams, J. Chem. Soc., Perkin Trans. 2 (1989) 59-66.

36   Theoretical characterization of formylperoxy and (haloformyl)peroxy radicals.
   J.S. Francisco and I.H. Williams, J. Phys. Chem. (1988) 92, 5347-5352.

35   Structural and spectral consequences of ion-pairing. III. A theoretical study of NO3-Li+ and NO3-Na+.
   J.S. Francisco and I.H. Williams, Chem. Phys. (1988) 120, 389-397.

34   The thermochemistry of polyoxides and polyoxy radicals.
   J.S. Francisco and I.H. Williams, Int. J. Chem. Kinet. (1988) 20, 455-466.

33   Theoretical probes for activated-complex structures and properties: specific solvation effects and a simulated Bronsted correlation.
   I.H. Williams, Bull. Soc. Chim. Fr. (1988) 192-198.

1987

32   Dissociation dynamics of the trifluoromethoxy radical.
   J.S. Francisco, Z. Li and I.H. Williams, Chem. Phys. Lett. (1987) 140, 531-536.

31   Theoretical modelling of specific solvation effects upon carbonyl addition.
   I.H. Williams, J. Am. Chem. Soc. (1987) 109, 6299-6307.

30   Structural and spectral consequences of ion-pairing. II. A theoretical study of ClO3-Li+ and ClO3-Na+.
   J.S. Francisco and I.H. Williams, Chem. Phys. (1987) 114, 339-345.

1986

29   Thermochemistry, structure and reactivity of the trifluoromethoxy radical.
   J.S. Francisco, J.I. Steinfeld and I.H. Williams,
Proc. 17th Int. Symp. Free Radicals, Granby Co., NBS Spec. Publ. (US) (1986) 716, 250-255.

28   Calculated conformational equilibrium isotope effect for [2H1] cyclohexane.
   I.H. Williams, J. Chem. Soc., Chem. Commun. (1986) 627-628.

27   Linearity and the unimportance of tunnelling in hydride transfer: ab initio MO studies.
   B.G. Hutley, A.E. Mountain, I.H. Williams, G.M. Maggiora and R.L. Schowen, J. Chem. Soc., Chem. Commun. (1986) 267-268.

26   Conformational analysis of the iron acyl complex [(h5-C5H5)Fe(CO)(PPh3)COCH3].
   S.G. Davies, J.I. Seeman and I.H. Williams, Tetrahedron Lett. (1986) 27, 619-622.

1985

25   Theoretical probes of activated-complex structure and properties: substituent effects in carbonyl addition.
   I.H. Williams, D. Spangler, G.M. Maggiora & R.L. Schowen, J. Am. Chem. Soc. (1985) 107, 7717-7723.

24   Structural and spectral consequences of ion-pairing: a theoretical study of CF3O-Li+ and CF3O-Na+.
   J.S. Francisco and I.H. Williams, Chem. Phys. (1985) 98, 105-114.

23   Theoretical studies of isotope effects pertinent to solvolysis mechanisms.
   I.H. Williams, J. Chem. Soc., Chem. Commun. (1985) 510-511.

22   A theoretical study of the force-field for carbon trioxide.
   J.S. Francisco and I.H. Williams, Chem. Phys. (1985) 95, 373-383.

21   A theoretical study of the structure and vibrational spectra of dioxirane and difluorodioxirane.
   J.S. Francisco and I.H. Williams, Chem. Phys. (1985) 93, 71-82.

1984

20   Theoretical modelling of compression effects in enzymic methyl transfer.
   I.H. Williams, J. Am. Chem. Soc. (1984) 106, 7206-7212.

19   Theoretical characterization of the trifluoromethoxy radical.
   J.S. Francisco and I.H. Williams, Chem. Phys. Lett. (1984) 110, 240-246.

18   A theoretical study of the structure and vibrational spectrum of the trifluoromethoxide anion.
   J.S. Francisco and I.H. Williams, Molec. Phys. (1984) 52, 743-748.

1983

17   Determination and characterization of a transition structure for water-formaldehyde addition.
   D. Spangler, I.H. Williams and G.M. Maggiora, J. Comput. Chem. (1983) 4, 524-541.

16   Calculation of secondary b-deuterium equilibrium isotope effects on protonation and deprotonation of methanol and methanediol.
   I.H. Williams, J. Molec. Struct., Theochem (1983) 105, 105-117.

15   Force-constant computations in cartesian coordinates. Elimination of translational and rotational contributions.
   I.H. Williams, J. Molec. Struct., Theochem (1983) 94, 275-284.

14   Theoretical models for solvation and catalysis in carbonyl addition.
   I.H. Williams, D. Spangler, D.A. Femec, G.M. Maggiora and R.L. Schowen,
   J. Am. Chem. Soc. (1983) 105, 31-40.

1982

13   Use and abuse of the distinguished-coordinate method for transition-state structure searching.
   I.H. Williams and G.M. Maggiora, J. Molec. Struct., Theochem (1982) 89, 365-378.

12   On the representation of force fields for chemically reacting systems.
   I.H. Williams, Chem. Phys. Lett. (1982) 88, 462-466.

11   Intermolecular interaction energies from minimal-basis SCF calculations. Interactions pertinent to formaldehyde hydration.
   G.M. Maggiora and I.H. Williams, J. Molec. Struct., Theochem (1982) 88, 23-35.


1981

10   NPE effects in bimolecular elimination.
   C.D. Chalk, J. McKenna, L.B. Sims and I.H. Williams, J. Am. Chem. Soc. (1981) 103, 281-284.

9     NPE effects in bimolecular nucleophilic substitution.
   C.D. Chalk, J. McKenna and I.H. Williams, J. Am. Chem. Soc. (1981) 103, 272-281.

8     Calculation of kinetic isotope effects for SN2 bromine exchange reactions: development of transition-state force field for calculation of NPE effects.
   J. McKenna, L.B. Sims and I.H. Williams, J. Am. Chem. Soc. (1981) 103, 268-272.

7     Non-potential-energy (NPE) effects in organic reactions: development of a suitable force field.
   C.D. Chalk, B.G. Hutley, J. McKenna, L.B. Sims and I.H. Williams,
   J. Am. Chem. Soc. (1981) 103, 260-268.

1980

6     Theoretical models for mechanism and catalysis of carbonyl addition.
   I.H. Williams, G.M. Maggiora and R.L. Schowen,
   J. Am. Chem. Soc. (1980) 102, 7831-7839.

5     Theoretical models for transition-state structure and catalysis in carbonyl addition.
   I.H. Williams, D. Spangler, D.A. Femec, G.M. Maggiora and R.L. Schowen,
   J. Am. Chem. Soc. (1980) 102, 6619-6621.

4     Stereochemistry of photosolvolysis of (-)-1-phenylethyltrimethylammonium iodide in water and methanol, and nucleophilic capture ratios during photosolvolysis of some benzylammonium salts.

V. Lillis, J. McKenna, J.M. McKenna, M.J. Smith, P.S. Taylor and I.H. Williams,
J. Chem. Soc., Perkin Trans. 2 (1980) 83-86.

1979

3     On the treatment of torsional coordinates in vibrational analyses.

I.H. Williams, J. McKenna and L.B. Sims,
J. Molec. Struct. (1979) 55, 147-150.

1977

2     Torsional internal coordinates in normal coordinate calculations.

I.H. Williams,
J. Molec. Spectrosc. (1977) 66, 288-301.

1974

1     Stereochemistry of photosolvolysis of quaternary benzylammonium salts in hydroxylic solvents.

V. Lillis, J. McKenna, J.M. McKenna and I.H. Williams,
J. Chem. Soc., Chem. Commun. (1974) 474.

 

Book Reviews:

Theoretical organic chemistry and molecular modeling, W. B. Smith, VCH, 1996
I.H. Williams, Chem. Brit. (1997) 33, 63.

Symmetry and topology in chemical reactivity, P. E. Schipper, World Scientific, 1994
I.H. Williams, Chem. Brit. (1995) 31, 809.

Structure and reactivity, J.F. Liebman and A. Greenberg (Eds.), VCH Publishers, 1988
I.H. Williams, J. Chem. Soc., Faraday Trans. (1990) 86, 1910.

 


Published Abstracts:

Kinetic isotope effects for enzyme-catalyzed methyl transfer,
G. D. Ruggiero, I. H. Williams, M. Roca, V. Moliner, I. Tu
ñón,
Abstr. Papers Am. Chem. Soc. (2005) 230, 81-BIOL.

Role of vibrational entropy in enzyme catalysis,
G. D. Ruggiero and I. H. Williams,
Abstr. Papers Am. Chem. Soc. (2004) 228, 307-PHYS Part 2

Theoretical modelling of enzyme catalytic power: Analysis of "cratic" and electrostatic factors in catechol O-methyl transferase.
I. H. Williams, M. Roca, S. Marti, J. Andres, V. Moliner, I Tu
ñón and J Bertran,
Abstr. Papers Am. Chem. Soc. (2004) 227: 243-COMP Part 1

Modelling chemical reactivity with GRACE and CHARMM,
I. H. Williams,
J. Molec. Graph. Modelling (1998) 16, 272-272.

Formyl halide hydrolysis,
G. A. Rickard and I. H. Williams,
J. Molec. Graph. Modelling (1998) 16, 277-277.

QM/MM modelling for chloroalkane hydrolysis,
G. D. Ruggiero and I. H. Williams,
J. Molec. Graph. Modelling (1998) 16, 277-278.

Pressure-dependence and metastable state formation in the photolysis of dichlorine monoxide (Cl2O),
S. L. Nickolaisen, C. E. Miller, S. P. Sander, M. R. Hand, and I. H. Williams,
Abstr. Papers Am. Chem. Soc. (1995) 210, 54-PHYS.

Transition-state structural variation in a model for carbonyl reduction by lactate dehydrogenase: quantum-chemical approaches,
J. Wilkie and I.H. Williams,
J. Molec. Graphics (1993) 11, 67-68.

Theoretical modelling of transition states for biochemical processes,
I.H. Williams,
J. Molec. Recognition (1991) 4, 106.

On the representation of force fields for chemically reacting systems,
I.H. Williams,
Bull. Soc. Chim. Belg. (1982) 91, 357.

Quantum-mechanical studies of the transition-state for water-formaldehyde addition,
D. Spangler, I. H. Williams, G. M. Maggiora, and R. L. Schowen,
Abstr. Papers Am. Chem. Soc., (1980) 180, 45-ORGN

Theoretical approaches to the mechanism of carbonyl addition

I. H. Williams, G. M. Maggiora, and R. L. Schowen,
Abstr. Papers Am. Chem. Soc., (1979) SEP, 56-56.

Published Discussion:

General Discussion on Chemical Reaction Theory
I.H. Williams, Faraday Discuss. Chem. Soc. (1998) 110, 477-520.

Faraday Symposium 29 "Potential Energy Surfaces and Organic Reaction Paths"

I.H. Williams, JCS Faraday. (1994) 90, 1615, 1673, 1679, 1737 – 1740, 1799.

General Discussion on Structure and Activity of Enzymes
I.H. Williams, Faraday Discuss. Chem. Soc. (1992) 93, 206-207 & 284-285.