Acta Cryst. (2012). C68, m251-m254 [ doi:10.1107/S0108270112033318 ]
Abstract: The crystal structure of the title compound, [Cu(ClO4)2(C4H12N2)2], (I), is reported at 100, 250 and 400 K. The CuII cation in this complex is coordinated in a distorted octahedral mode characteristic of Jahn-Teller systems. The coordination of the perchlorate ligands via longer, and presumably weaker, axial Cu-O distances varies significantly as a function of temperature. One of the Cu-O distances increases between 100 and 250 K, and one of the Cu-O-Cl angles expands between 250 and 400 K. At all temperatures, the complex forms a two-dimensional N-HO hydrogen-bond network in the (001) plane.
Structure factor file (CIF format) (171.1 kbytes)
Structure factor file (CIF format) (176.9 kbytes)
Structure factor file (CIF format) (170.6 kbytes)
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