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Publications (3)0 Total impact

  • Gul S. Khan, George R. Clark, Barker David
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    ABSTRACT: The title compound, C11H15N3O6, was prepared by the reaction of (3,5-dinitrobenzyl)methanesulfonate with diethanolamine. The asymmetric unit contains four crystallographically independent molecules which differ primarily in their rotation about the bond between the aromatic ring and the N-diethanol unit. The molecules are linked into sheets by a hydrogen-bonding network which involves all of the hydroxy groups, with only van der Waals contacts between the sheets.
    Acta Crystallographica Section E. 01/2008;
  • Gul S. Khan, George R. Clark, Barker David
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    ABSTRACT: The title compound, C15H24N2O4Si, was prepared by the reaction of (3-acetamido-5-nitrobenzyl)methanol with tert-butyldimethylsilyl chloride and is a key intermediate in the synthesis of novel nonsymmetrical DNA minor groove-binding agents. There are two independent molecules in the structure, which differ primarily in the rotation about the C—O bond next to the Si atom. Two strong N—H...O hydrogen bonds align the molecules into a wide ribbon extending approximately parallel to the b axis.
    Acta Crystallographica Section E. 01/2008;
  • Gul S. Khan, George R. Clark, Barker David
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    ABSTRACT: The title compound, C8H8N2O7S, an intermediate in the synthesis of N,N-bis(2-hydroxyethyl)-3,5-dinitroaniline, exists as a discrete molecule; the nitro groups are twisted with respect to the aromatic system [dihedral angles = 17.0 (1) and 26.3 (1)°].
    Acta Crystallographica Section E. 01/2008;