SYNTHESIS AND CHARACTERISATIONS OF SIX NEW BIS-THIOSEMICARBAZONE LIGANDS

Six new bis-thiosemicarbazones ligands were synthesized with rigid or flexible organic chemical links between the two thiosemicarbazones moieties. Such ligands have been designed for the synthesis of polymetallic coordination complexes. They were synthesised by the condensation reaction between aldehydes and substituted thiosemicarbazides in alcohol, using acetic acid as a catalyst. To determine the composition, the products were characterised by 1H, 13C and 15 N nuclear magnetic resonance, mass spectrometry and elemental analysis