Acta Cryst. (2008). E64, m1387  [ doi:10.1107/S1600536808032285 ]

Poly[tris[₂-2-(pyrazol-1-yl)pyrazine]hexa-_1,3-thiocyanato-tricadmium(II)]

L. Y. Yang and J. M. Shi

Abstract: The asymmetric unit of the title crystal structure, [Cd₃(NCS)₆(C₇H₆N₄)₂]_n, contains two independent Cd^II ions, one of which is located on a crystallographic inversion center. Each independent Cd^II ion is in a slightly distorted octahedral coordination environment, but the disortion from ideally octahedral is greater in the environment of the Cd^II ion on a general position. Both thiocyanate ligands act as bridges connecting independent Cd^II ions, and the 2-(pyrazol-1-yl)pyrazine ligands chelate one Cd^II ion in a bidentate mode while the remaining N atom of the pyrazine ring coordinates to a symmetry-related Cd^II ion, forming a two-dimensional structure parallel to (211).

Online 11 October 2008

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