Acta Cryst. (2005). E61, m394-m396  [ doi:10.1107/S1600536805002205 ]

An X-ray powder diffraction study of catena-poly[[bis(1-methyl-1H-tetrazole-N⁴)copper(II)]-di--bromo]

L. S. Ivashkevich, A. S. Lyakhov, M. M. Degtyarik and P. N. Gaponik

Abstract: The crystal structure of the polymeric title complex, [CuBr₂(C₄H₈N₈)₂]_n, has been solved from X-ray powder data and refined with the Rietveld method using geometrical soft restraints. The Cu atom, lying on an inversion centre, has octahedral coordination, with two N atoms [Cu-N = 2.090 (13) Å] and two Br atoms [Cu-Br = 2.432 (4) Å] in the equatorial positions. The axial sites of the octahedron are occupied by two Br atoms, with Cu-Br distances of 3.101 (4) Å. Each Br atom is a bridge between neighbouring Cu atoms, which is responsible for formation of polymeric layers parallel to the bc plane, with only van der Waals interactions between them.

Online 29 January 2005

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