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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.
Graphical abstract
New cyanide-bridged heteronuclear polymeric complexes, [Cu(hepH)2Pt(μ-CN)2(CN)2]n (1), [Zn(hepH)2Pt(μ-CN)2(CN)2]n (2), and [Cd(hepH)2Pt(μ-CN)2(CN)2]n (3) (2-pyridineethanol abbreviated to hepH), have been synthesized and characterized by elemental analysis, FT-IR and Raman spectroscopies, thermal analysis, and single-crystal X-ray diffraction techniques. Hydrogen bonds play very important roles in the construction of supramolecular structures. From the crystallographic data, it was determined that the crystal packings of 1–3 were composed of rare intermolecular C–H⋯Pt interactions. In addition, these complexes have π⋯π and O–H⋯N interactions.
Acknowledgement
This work was supported by the Research Fund of Eskişehir Osmangazi University (Project No. 201419A207). The authors are indebted to Anadolu University and the Medicinal Plants and Medicine Research Centre of Anadolu University, Eskişehir, Turkey, for the use of X-ray diffractometer.
Disclosure statement
No potential conflict of interest was reported by the authors.
