Acta Cryst. (2009). E65, m1188  [ doi:10.1107/S1600536809033042 ]

Diaquadichlorido[5-(3-pyridinio)tetrazolato-N²]copper(II) dihydrate

B. Wang

Abstract: The title compound, [CuCl₂(C₆H₅N₅)₂(H₂O)₂]·2H₂O, was synthesized by hydrothermal reaction of CuCl₂ with 3-(2H-tetrazol-5-yl)pyridine. The Cu^II cation, located on an inversion center, is coordinated by two Cl^- ions, two N atoms from two 5-(3-pyridinio)tetrazolate zwitterions and two O atoms from two water molecules in a distorted octahedral geometry. In the crystal, molecules are linked into a two-dimensional sheet parallel to (001) by N-HN, O-HN, O-HO and O-HCl hydrogen bonds involving the pyridinium N atom, the Cl atoms and the coordinated and free water molecules. The latter are disordered over two positions in a 0.54:0.46 ratio.

Online 9 September 2009

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