Professor Ian D. WILLIAMS (PhD, Bristol, 1986)

E-mail: "chwill@ust.hk"
Tel: (852) 2358-7384; Fax: (852) 2358-1594

ian

Research Interests

Solid state chemistry and chemical crystallography

Crystal Engineering

Dr Williamsˇ¦ research aims to expore the structures and modify the properties of crystalline solids through controlled design of their internal structure or architecture.  A variety of methods of synthesis are used including solvothermal and flux approaches.  Areas range from organic crystals (including natural products, co-crystals, N-H-O hydrogen bonds, pharmaceutical formulation, chiral determination and resolution) to metal-organic network polymers and inorganic and hybrid framework crystals.



Representative Publications

"Controlled Hydrothermal Growth and enhanced Up-conversion Emission of NaLnF4 (Ln =Y, Dy-Yb)" Inorganic Chemistry 46(13): 5404-5410 (2007).

"Short N ... O hydrogen bonds in the 1:1 adduct of 4,4 '-bipyridyl and oxalic acid" Acta Crystallographica Section E-Structure Reports Online 63: o1240-o1242 (2007).

"Antibacterial diterpenoids from Sagittaria pygmaea" Planta Medica 73(1): 84-90 (2007).

"Effect of 2,6-disubstituted Aryl Groups on Acyclic Conformation: Preference for an Antiperiplanar Orientation of the Geminal and Vicinal Hydrogens" Journal of Organic Chemistry 71, 8835-8841 (2006).

"Neutron diffraction studies of the 1 : 1 and 2 : 1 cocrystals of benzene-1,2,4,5-tetracarboxylic acid and 4,4 '-bipyridine" Acta Crystallographica Section C -Crystal Structure Communications  62: o157-o161 (2006)

"Hydrothermal Synthesis of Indium Tartrates: Structures of the Chiral Polymer [In(L-TAR)3-H2O] 0.5H2O containing the Tartrate Trianion, and a Microporous Hybrid Solid [In(OH)(D/L-TAR)2-]2H2O" Inorg.Chem.Commun. 9,507-511 (2006).

"Ent-rosane and Labdane Diterpenoids from Sagittaria sagittifolia with Anti-bacterial Activity against Three Oral Pathogens" J. Natural Products 69(2): 255-260 (2006).

"Variable-Temperature Neutron Diffraction Studies of the Short, Strong Hydrogen Bonds in the Crystal Structure of  Pyridine-3,5-Dicarboxylic Acid" Acta Crystallographica Sect. B-Structural Sci  61: 724-730 Part 6, DEC 2005.

"Microporous Chiral Metal Coordination Polymers: Hydrothermal Synthesis, Channel Engineering and Stability of Lanthanide Tartrates" Chemical Communications, 5515-5517 (2005).

"Cytotoxic diterpenoids from the roots of Euphorbia ebracteolata" Planta Medica, (2005) 71 (4): 349-354 Apr 2005

"Synthesis of Elliptical Vanadoborates housing Bimetallic Centers [Zn4(B2O4H2)(V10B28O74H8)](8-) and [Mn4(C2O4)(V10B28O74H8)](10-)" Chemical Communications (14): 1827-1829 (2005).

"Variable-temperature Neutron Diffraction Studies of the Short, Strong N...O Hydrogen Bonds in the 1:2 Co-crystal of Benzene-1,2,4,5-tetracarboxylic acid and 4,4'-Bipyridyl"Acta Crystallographica Section B-Structural Science 59: 794-801 (2003).

"Physical Stability versus Chemical Lability in Microporous Metal Coordination Polymers" Chemical Communications (15): 1642-1643 (2002)

"Hydrothermal Synthesis of three new 3-D Framework Rare-earth Mellitates" Inorg. Chem. Commun. 4, 467-470 (2001).

"A Templated Borate Polymer from Boric Acid Flux Synthesis, [Cu(en)2(B7O13H3)]" Inorg. Chem. Commun. 3, 401-404 (2000).

"Solvothermal Synthesis of a Stable Coordination Polymer with Copper-I-Copper-II Dimer Units: [Cu4{1,4-C6H4(COO)2}3(4,4ˇ¦-bipy)2]n" J. Amer Chem. Soc. 122, 6293-6294 (2000).

"Cooperative Magnetic Behavior in the Coordination Polymers [Cu3(TMA)2L3]" J. Appl. Phys. 87, 6007-6009 (2000).

"A Chemically Functionalizable Nanoporous Material [Cu3(TMA)2(H2O)3]n" Science 283, 1148-1150 (1999).

"A Metal Rich Fluorinated Indium Phosphate with 14 Membered Ring Cavities 4[pnH2]3[H3O][In9(PO4)6(HPO4)2F16]3[H2O]" Chem. Mater. 10, 773-776 (1998).

"An Organo templated Vanadium Borate Polymer from Molten Boric Acid Flux Synthesis 4[enH]2[enH2][V6B22O53H8] " Chem. Commun., 2463-2464 (1998). 

"A New Chain Architecture for a 1-D Aluminophosphate, [NH3CH2CH2NH3] [AlP2O8H] "  Chem. Commun, 1273-1274 (1997). 

"Synthesis and Structural Characterisation of  2-D and 3-D Fluorinated Indium Phosphates"  Chem. Commun., 781-782 (1997).

"Organo-template Control of Inorganic Structures: A Low Symmetry 2-D Sheet Aluminophosphate 3[NH3CHMeCH2NH3][Al6P8O32]H2O" Chem.Commun., 1781-1782 (1996).

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