Structural characterization and thermal behaviour of the bis(2-aminothiazole)bis(isothicyanato)zinc(Ⅱ) complex, Zn(ncs)2(C3H4N2S)2

Abstract

The zinc(II) complex, Zn(NCS)2(C3H4N2S)2, I, has been synthesized and characterized by single crystal X-ray diffraction, thermal analysis and infrared spectroscopy. The complex I crystallizes in the triclinic system, P1 space group with a = 7.587(1), b = 8.815(1), c = 12.432(2) Å, α = 75.584(8), β = 83.533(9), γ =68.686(8)o, V = 750.0(2) Å3, Z = 2, R1 = 0.036 and ωR2 = 0.101. The central Zn(II) atom has a tetrahedral coordination geometry, with the heterocyclic nitrogen atoms of 2-aminothiazole ligands and the nitrogen atoms of isothiocyanate ligands. The crystal structure is stabilized by one-dimensional networks of the intermolecular N-H…S hydrogen bonds between the amino group of 2-aminothiazole ligands and the sulfur atom of isothiocyanate ligands. Based on the results of thermal analysis, the thermal decomposition reaction of complex I was analyzed to have three distinctive stages such as the loss of 2-aminothiazole, the decomposition of isothiocyanate and the formation of metal oxide.