Synthesis and characterization of Cr(III), Mn(III), Fe(III), Ti(III), YO(IV), Th(IV), Zr(IV) and UO₂(VI) polychelates derived from bis-bidentate salicylaldimine Schiff base

Abstract

The polychelates of Cr(III), Mn(III), Fe(III), Ti(III), YO(IV), Th(IV),

Zr(IV) and UO₂(VI) with 4,4'-bis[(N-p-nitrophenylsalicylaldimine-5)-azolbiphenyl (BNSAB) have been synthesized and characterized by elemental analysis, magnetic susceptibility,

electronic and IR spectral data and thermogravimetric analysis. The ligand BNSAB acts as bis-bidentate ONNO donor. The thermal data have been analyzed for the kinetic parameters by Broido's method. The electrical conductivity of the ligand and polychelates has been measured which indicate their semiconducting behaviour in the studied temperature range. The ligand and its polychelates have also been screened for their antimicrobial activity using various microorganisms.