SYNTHESIS AND CHARACTERIZATION OF SOME TRINUCLEAR COBALT(II) THIOCARBO XYLATES
摘要:
Some cobalt(II) complexes of thiocarboxylic acids with the general composition Co(SOCR')(2) and Co(SOCR')(OOCR) [where R = C13H27, C15H31 or C17H35 and R' = CH3 or C6H5] have been. synthesized by substitution reactions and characterized by elemental analyses, spectral, studies and magnetic moment measurements. The electrical conductance data indicate that (Co(SOCCH3)(2) is a 1:2 electrolyte while the other complexes are non-electrolytes. IR spectra show the presence of bidentate and bridging modes of coordination for carboxylate and thiocarboxylate anions, respectively. Electronic spectral data and magnetic moment values indicate an octahedral environment around cobalt(II). The plausible structure for the trimeric species has been proposed on the basis of the physico-chemical studies. Thermoanalytical data indicate the complexes are stable upto 175 degreesC, above which decomposition starts.