New Dioxomolybdenum(VI) Complexes with Tridentate Dibasic ONO Donor Schiff Base Derived from o-Amino-benzylalcohol and Salicylaldehyde or 2-Hydroxy-1-naphthaldehyde

Abstract

A series of new dioxomolybdenum(VI) complexes of the Schiff bases derived from o-aminobenzylalcohol and salicylaldehyde or 2-hydroxy-1-naphthaldehyde has been prepared and characterized on the basis of elemental analyses, molecular weight, electrical conductance, infrared and electronic spectra, and magnetic susceptibility measurements. The Schiff bases behave as dibasic, tridentate ONO donor ligands and form complexes of the type MoO₂L (where LH₂ = Schiff base) which are oligomers. MoO₂L reacts with monodentate ligand(A) like pyridine, DMSO and forms six-coordinated complexes of the type MoO₂L. A which are monomers. The complexes are non-electrolytes, diamagnetic, six-coordinated and octahedral, and possess a cis-MoO₂ structure. All the complexes exhibit a charge transfer transition around 25500 cm⁻¹.