Acta Cryst. (2009). E65, o2133 [ doi:10.1107/S1600536809031055 ]
Abstract: In the title compound, C3H7N6+·C7H5O5-·2H2O, the melaminium and benzoate ions are approximately planar (r.m.s. deviation of the non-hydrogen atoms is 0.093 Å) and there is a strong C22(8) hydrogen-bonding embrace between them. The centre of symmetry generates a second acid-base pair which is bound to the first by a C22(8) (N-HN) embrace common between melamine molecules in similar compounds. Further extensive hydrogen bonding assembles the components into a three-dimensional hydrogen-bonded network.
Online 12 August 2009
Copyright © International Union of Crystallography