Acta Cryst. (2009). E65, m323  [ doi:10.1107/S1600536809005972 ]

Guanidinium tetrabromidomercurate(II)

H. Terao, T. M. Gesing, H. Ishihara, Y. Furukawa and B. T. Gowda

Abstract: The Hg atoms in the crystal structure of the title compound, (CH₆N₃)₂[HgBr₄], are tetrahedrally coordinated by four Br atoms and the resulting [HgBr₄]^2- tetrahedral ions are linked to the [C(NH₂)₃]⁺ ions by bromine-hydrogen bonds, forming a three-dimensional network. In the structure, the anions are located on special positions. The two different HgBr distances of 2.664 (1) and 2.559 (1) Å observed in the tetrabromidomercurate unit are due to the connection of Br atoms to different number of H atoms.

Online 25 February 2009

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