Abstract
ABSTRACT New cyano bridged transition metal complexes, [Cu(detu)4Ni(CN)4]-2H2O (1) and [Zn(H2O)(detu)Ni(CN)4]-2H2O (2) (detu = N, N' diethyl thiourea) have been synthesised in powder form. Their structures were illuminated by using spectroscopic, thermal and elemental analysis techniques. The nickel atom exhibits square planar geometry in these complexes by coordinating with the cyano group's nitrogen atoms. The copper atom of 1 is six coordinated with two bridging cyano groups and four detu ligands. In contrast, the zinc atom of 2 is six coordinated with four bridging cyano groups, one detu ligand and one aqua ligand. In addition, the structure of 2 is formed from polymeric layers of |Zn-Ni(CN)41 „ with the detu and aqua ligands bonded to the zinc atom. Thermal stabilities and decomposition products of 1 and 2 were examined in the static air atmosphere between 30 and 900 °C. Keywords: btetracyanonickelate(II) complex, N,N'-diethyl thiourea, cyano-bridged complex, vibration spectra, thermal analysis.
Highlights
Thioureas have two amino nitrogens and thiocarbonyl sulphur as potential donor atoms
This paper reported the synthesis and characterisation of
Vibrations of the detu ligand The vibration spectra of the synthesised complexes are shown in Figs. 1 and 2
Summary
Thioureas have two amino nitrogens and thiocarbonyl sulphur as potential donor atoms. Tetracyanonickelate(II) complex, N,N’-diethyl thiourea, cyano-bridged complex, vibration spectra, thermal analysis In the IR spectrum of the detu ligand, characteristic vibration bands in three frequency regions are expected.
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