Synthesis and characterization of manganese (III), iron (III), zirconium (IV), thorium (IV), oxovanadium (IV) and dioxouranium (VI) chelates of a polymeric Schiff base (PSB)

A few symmetrical tetradentate polymeric Schiff base (PSB) chelates of the type [M(PSB)n where M=Mn (III), Fe (III), Zr (IV), oxovanadium (IV), Th (IV), dioxouranium (VI) and PSB is derived from 4, 4'-dihydroxy-3, 3'-dipropylbiphenyl and 1,3- diaminopropane, have been synthesised and characterized by elemental analysis, magnetic moment, IR, electronic spectra and TGA studies. The D.C. electrical conductivity and antimicrobial activities of ligand and the chelates have also been studied. The thermal decomposition of the chelates occurs mainly in two steps. Thermal activation energy has been determined by Broido method. (author)