Acta Cryst. (2010). E66, o1245 [ doi:10.1107/S1600536810015643 ]
Abstract: In the title adduct, C7H5NO4·0.5C6H6N4, the complete biimidazole molecule is generated by a crystallographic inversion centre. In the crystal, N-HO and O-HN hydrogen bonds connects the 4-nitrobenzoic acid and 2,2'-biimidazole units, affording multi-dimensional frameworks with graph-set descriptor R22(9).
Online 8 May 2010
Copyright © International Union of Crystallography