Acta Cryst. (2007). E63, m1952-m1953  [ doi:10.1107/S160053680702925X ]

Bis(2,2'-bipyridine-1²N,N')--bromido-1:2²Br-tribromido-2³Br-copper(II)mercury(II)

Y.-M. Lee, H.-W. Ryu, S.-N. Choi, J. S. Choi and S. K. Kang

Abstract: In the title compound, [CuHgBr₄(C₁₀H₈N₂)₂], the Cu^II atom is coordinated by four N atoms of two bidentate 2,2'-bipyridine ligands and one Br atom of a tetrabromidomercurate anion in a distorted trigonal-bipyramidal geometry. The Br atom occupies an equatorial position and bridges the Cu^II and Hg atoms, with Hg-Br distances of 2.7503 (15) Å, longer by more than 0.15 Å than the terminal Hg-Br bonds. Weak - interactions between symmetry-related pyridine rings stabilize the packing; the shortest C-C distance between two parallel aromatic rings of bipy ligands is 3.491 (9) Å.

Online 20 June 2007

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