Acta Cryst. (2009). E65, m1639  [ doi:10.1107/S1600536809046376 ]

1-Butyl-3-(1-naphthylmethyl)benzimidazolium hemi{di--iodido-bis[diiodidomercurate(II)]} dimethyl sulfoxide monosolvate

Z.-Q. Wang, G. Shen, Z.-Y. Zheng, X.-M. Wu and Q.-X. Liu

Abstract: In the title compound, (C₂₂H₂₃N₂)[Hg₂I₆]_0.5·(CH₃)₂SO, the 1-butyl-3-(1-naphthylmethyl)benzimidazolium anion lies across a centre of inversion. The dihedral angle between the benzimidazolium and naphthalene ring systems is 81.9 (3)°. In the crystal structure, - stacking interactions are observed between the imidazolium ring and the unsubstituted benzene ring of the naphthalene ring system, with a centroid-centroid separation of 3.510 (5) Å. In the centrosymmetric anion, the Hg(II) atoms are in a distorted tetrahedral coordination. The dimethyl sulfoxide solvent molecule is disordered over two sites with occupancies of 0.615 (9) and 0.385 (9).

Online 21 November 2009

Copyright © International Union of Crystallography
IUCr Webmaster