Abstract

The cyanide-bridged heteronuclear polymeric complexes, [M(hepH)2Pt(μ-CN)2(CN)2]n (M = Cu(II) (1), Zn(II) (2) and Cd(II) (3); hepH = 2-pyridineethanol), have been synthesized and characterized by elemental analysis, FT-IR and Raman spectroscopies, thermal analysis, and single-crystal X-ray diffraction techniques. The crystallographic analyses reveal that 1 and 2 crystallize in the triclinic system, space group P-1, while 3 crystallizes in the monoclinic system, space group P21/n. The structures of 1–3 consist of 1-D linear chains in which the M(II) and Pt(II) ions are linked by cyanide ligands. Each M(II) center exhibits a distorted octahedral coordination environment with four nitrogens from two cyanides and two hepH ligands. The 1-D chains are further linked by C–H⋯Pt and O–H⋯N hydrogen bonding interactions to construct 3-D supramolecular structures. Thermal stabilities and decomposition products of the complexes were investigated from 30 to 700 °C in air.

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