Acta Cryst. (2006). E62, m617-m619  [ doi:10.1107/S1600536806006490 ]

Tetra--1,1'-dimethyl-2,2'-bi-1H-imidazole-bis[aquacopper(II)] tetranitrate hexahydrate

L. M. Gruia, F. D. Rochon and A. L. Beauchamp

Abstract: The crystal structure of the title compound, [Cu₂(C₈H₁₀N₄)₄(H₂O)₂](NO₃)₄·6H₂O, contains dinuclear complex cations with twofold rotation symmetry, in which two Cu^II centers are bridged by four 1,1'-dimethyl-2,2'-bi-1H-imidazole ligands. Four N donors define the base of a slightly distorted square pyramid around each Cu^II center, the apical position being occupied by an aqua ligand. The nitrate ions and uncoordinated water molecules form a network of hydrogen bonds, in which the aqua ligands are also involved. The large CuCu separation [3.092 (1) Å] is consistent with the absence of substantial metal-metal interactions, as suggested by the normal magnetic moment observed at room temperature.

Online 28 February 2006

Copyright © International Union of Crystallography
IUCr Webmaster