Date Published: May 01, 2010
Publisher: International Union of Crystallography
Author(s): Wen-Zhen Fu, Wei-Juan Wang, Yun-Yin Niu, Seik Weng Ng.
In the crystal structure of the title salt, C11H12N22+·2Cl−·H2O, the dication adopts a butterfly shape [dihedral angle between rings = 69.0 (1)°] with the water molecule lying in the V-shaped cavity. Each O—H bond of the water molecule lies parallel to an aromatic ring and forms an O—H⋯Cl interaction to a chloride anion. The methylene C atom in the dication and the water O atoms lie on special positions of twofold site symmetry.
For the synthesis, see: Almarzoqi et al. (1986 ▶). For the crystal structure of dipyridiniomethane diiodide, see: Brüdgam & Hartl (1986 ▶). For background to the use of similar compounds in the synthesis of coordination polymers, see: Niu et al. (2008 ▶).