Nura Suleiman Gwaram - 2,6-Diamino-4-oxo-3,4-dihydropyrimidin- 1-ium chloride dihydrate

Version 1

      Publication Details (including relevant citation   information):

      Nura Suleiman Gwaram, Hamid Khaledi* and Hapipah
      Mohd Ali
      Department of Chemistry, University of Malaya, 50603 Kuala   Lumpur, Malaysia
      Correspondence e-mail: khaledi@siswa.um.edu.my
      Received 1 August 2010; accepted 5 August 2010
      Key indicators: single-crystal X-ray study; T = 100 K; mean (C–C)   = 0.002 A°
      ;
      R factor = 0.024; wR factor = 0.066; data-to-parameter ratio =   10.7.

      Abstract:

      In the crystal structure of the title compound, C4H7N4O+-
      Cl2H2O, adjacent cations are connected to one another
      through N—H O hydrogen bonds, forming infinite chains
      along the b axis. These chains are further hydrogen bonded to
      the chloride anions and water molecules, resulting in a   threedimensional
      network. The pyrimidine rings of adjacent
      molecules are arranged in an antiparallel manner above each
      other with centroid–centroid distances of 3.435 (1) A ° ,   indicative
      of – interactions.
      Related literature
      For related structures, see: Wijaya et al. (2004); Muthiah et   al.
      (2004).

      Address (URL): http://journals.iucr.org/e/