Research Summary:
My research involves the investigation of intermolecular interactions in the solid state in a number of different model systems, including sulfur-nitrogen heterocycles and simple organic salts. The eventual aim of this research is to allow design of molecular materials with interesting properties, such as magnetic or optical properties.

Selected Publications:

• Hydrogen bonding networks in ammonium carboxylate salts: the crystal structures of phenylethylammonium fumarate-fumaric acid, phenylethylammonium succinate-succinic acid and anilinium fumarate-fumaric acid. D.A. Haynes and L.K. Pietersen. CrystEngComm Web release 7 Jan 2008, DOI: 10.1039/b716436j
• Cocrystallisation of succinic and fumaric acids with lutidines: a systematic study. D.A. Haynes, W. Jones and W.D.S. Motherwell. CrystEngComm. 2006, 8, 830-840.
• Crystal structures and magnetic properties of a sterically encumbered dithiadiazolyl radical, 2,4,6-(F3C)3C6H2CNSSN. A. Alberola, C.S. Clarke, D.A. Haynes, S.I. Pascu and J.M. Rawson. Chem. Commun. 2005, 4726-728.
• Hydrate formation in NH+-containing salts of pharmaceutically acceptable anions: A CSD survey.
  D.A. Haynes, W. Jones, and W.D.S. Motherwell. CrystEngComm. 2005, 7, 342-345.
• Small molecule fixation by a dithiadiazolyl radical: X-ray crystal structures of (CF3C6H3FCNSSN)2 and (CF3C6H3FCNSSN)2•G (G = N2, Ar, CO2 and SO2). C.S. Clarke, D.A. Haynes, J.M. Rawson and A.D. Bond. Chem. Commun. 2003, 2774-27753.
• Structural studies of dithiatetrazocines: X-ray crystal structures of the symmetric dithiatetrazocines p-XC6H4CN4S2CC6H4X [X=NO2, Br] and the first unsymmetric dithiatetrazocine, p-BrC6H4CN4S2CC6H4NO2. A.D. Bond, D.A. Haynes and J.M. Rawson. Can. J. Chem. 2002, 80, 1507-1517.