catena-Poly[[tetrakis(1H-pyrazole-κN2)copper(II)]-μ-hexafluoridosilicato-κ2F:F′]

Abstract

In the title one-dimensional coordination polymer, [Cu(SiF6)(C3H4N2)4]n, the CuII atom is coordinated by two hexafluoridosilicate F atoms and four pyrazole N atoms in a distorted trans-CuF2N4 octahedral environment. The dihedral angle between the planes of the pyrazlole rings in the asymmetric unit is 74.4 (3)°. The hexafluoridosilicate dianion acts as a bridging ligand, connecting the CuII atoms into a [1-10] chain. The Cu and Si atoms lie on special positions with 2/m site symmetry. In the crystal, intrachain N—H...F hydrogen bonds occur and weak C—H...F interactions link the chains.