Chloridotris(3,5-dimethyl-1H-pyrazole-κN2)(formato- κO)copper(II)-dichlorido-bis(3,5-dimethyl-1H-pyrazole-κN 2)copper(II) (2/1)

Abstract

The asymmetric unit of the title compound, [Cu(CHO2)Cl(C 5H8N2)3]2·[CuCl 2(C5H8N2)2] or 2[A]·[B], contains one A mol-ecule and one half-molecule of B, located on a centre of inversion. The CuII environments in A and B are different. In A, the CuII atom is coordinated by three N atoms from three 3,5-dimethyl-1H-pyrazole (L) ligands, one O atom from a formate ligand and a chloride anion in an axial position [Cu - Cl = 2.4275 (7) Å] in a distorted tetra-gonal-pyramidal geometry. The CuII atom in B is coordinated by two N atoms from two L ligands and two chloride anions [Cu - Cl = 2.2524 (6) Å] in a distorted square-planar geometry. In the crystal, inter-molecular N - H⋯O hydrogen bonds link mol-ecules A into centrosymmetric dimers. Inter-molecular N - H⋯Cl hydrogen bonds further link these dimers with the B mol-ecules, forming chains propagating in [101].