Acta Cryst. (2009). E65, m1652  [ doi:10.1107/S1600536809047461 ]

Bis(1,3-diethylbenzimidazolium) tetrabromidomercurate(II)

S.-J. Li, A.-H. Chen, Z.-Y. Zheng, S.-W. Liu and Q.-X. Liu

Abstract: In the title compound, (C₁₁H₁₅N₂)₂[HgBr₄], the tetracoordinated Hg^II center of the complex anion adopts a distorted tetrahedral geometry [Hg-Br = 2.5755 (8)-2.623 (11) Å and Br-Hg-Br = 103.78 (19)-116.4 (3)°]. One of the Br atoms is disordered over two sites [site-occupancy factors = 0.51 (6) and 0.49 (6)]. The N-C-N angles in the cations are 110.7 (6) and 111.4 (7)°. In the crystal packing, a supramolecular chain is formed via both weak intermolecular C-HBr hydrogen bonds and - aromatic ring stacking interactions [centroid-centroid separation = 3.803 (1) Å].

Online 21 November 2009

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