Synthesis and Characterization of Cobalt(III) Complexes with Thiophene-2-carboxylaldehyde Thiosemicarbazone

摘要

Cobalt(III) complexes of thiophene-2-carboxyal-dehyda thiosemicarbazone (ligand), of general formulae, Co(ligand)2.X3, Co(ligand)X3.H2O (where X = NO#x2212;3, Cl#x2212;, Br#x2212;, I#x2212;and CH3COO#x2212;) and Co(ligand-H)3have been prapared and characterised. The complexes are diamagnetic. Ligand field parameters have been calculated from the electronic spectra. IR spectra show that the ligand acts as a bidantats. Octahedral geometry has been suggested for all these complexes.