Structure determination of Co(IIl) complex with 4-phenylthiosemicarbazone isatin

Abstract

Co(IlI) complex of isatin 4-phenylthiosemicorbazone has heen synthesized. It is a dark red crystalline compound, slightly soluble in water, more soluble in DMSO and DMF. This compound has been characterized by MS. NMR, IR spectrometries as well as electrical conductivity measurement. The results show that the inner sphere complex contains one metal ion and two ligands. Co(IlI) ion coordinates to the ligand via S atom, isain-O atom and hydrazine-N atom. Both IR and NMR spectra confirm that there is a structural change of the ligand upon complexation.