1,3-Bis(4-bromo-phen-yl)imidazolium chloride dihydrate

• Published in: Acta crystallographica. Section E, Structure reports online Vol. 66; no. Pt 6; pp. o1438 - o1439
• Main Authors: Garden, Simon J, Gama, Paola E, Tiekink, Edward R T, Wardell, James L, Wardell, Solange M S V, Howie, R Alan
• Format: Journal Article
• Language: English
• Published: United States International Union of Crystallography 22.05.2010
• Subjects: Organic Papers
• ISSN: 1600-5368; 1600-5368
• DOI: 10.1107/S1600536810018581

In the title hydrated salt, C(15)H(11)Br(2)N(2) (+)·Cl(-)·2H(2)O, the complete imidazolium cation is generated by a crystallographic twofold axis, with one C atom lying on the axis. The chloride ion and both water mol-ecules of crystallization also lie on a crystallographic twofold axis of symmetry. The cation is non-planar, the dihedral angle formed between the central imidazolium and benzene rings being 12.9 (3)°; the dihedral angle between the symmetry-related benzene rings is 25.60 (13)°. In the crystal, O-H⋯Cl hydrogen bonds result in supra-molecular chains along c mediated by eight-membered {⋯HOH⋯Cl}(2) synthons. These are consolidated by C-H⋯O and π-π [centroid-centroid distance = 3.687 (3) Å] inter-actions.