Acta Cryst. (2006). E62, o1036-o1037  [ doi:10.1107/S160053680600482X ]

Diaminopyrimidinium squarate 1.394-hydrate

A. Köroglu

Abstract: In the title compound, 2C₄H₅N₃⁺·C₄O₄^2-·1.394H₂O, both the squarate and the aminopyrimidinium molecules lie on a crystallographic mirror plane and the water molecules are located between the mirror planes. The inversion-related aminopyrimidine molecules are linked through N-HN hydrogen bonds [NN = 2.975 (3) Å] to form dimers. The dimers and the squarate dianions are alternately arranged and linked via N-HO hydrogen bonds [NO = 2.621 (2) and 2.811 (2) Å] to form a chain along the c axis. Chains lying on the adjacent planes are linked via O-HO hydrogen bonds [OO = 2.713 (2) Å] involving the water molecules to form a three-dimensional network.

Online 15 February 2006

Copyright © International Union of Crystallography
IUCr Webmaster