Syntheses and characterization of some dimeric zirconium(IV) complexes of Schiff bases derived from salicylaldehyde, substituted salicylaldehydes and 3-aminothiophenol

Abstract

A few Zr(IV) complexes of the type [Zr(OH)_zL·CH₃OH]₂ (where LH₂ = tridentate dibasic schiff base derived from 3-aminothiophenol and salicylaldehyde, 5-chlorosalicylaldehyde, 5-bromosalicylaldehyde, 5-nitrosalicylaldehyde and 2-hydroxy-1-naphthaldehyde have been synthesized and characterized by elemental analyses, electrical conductance, molecular weight, IR and mass spectra, and magnetic susceptibility measurements. The complexes are dimers, nonelectrolytes and diamagnetic. The complexes are found to be seven-coordinated. A dimetallic, hydroxobridged, pentagonal bipyramidal structure has been suggested for the complexes.