Synthesis and characterization of the first diorganotin(IV) complexes containing mixed arylazobenzoic acids and having skew trapezoidal bipyramidal geometry

Three diorganotin(IV) complexes of the type, [R2Sn(LaH)(LbH)] (R = nBu or Me and, LaH and LbH are two different 5-[(E)-2-(aryl)-1-diazenyl]-2-hydroxybenzoate residues; a: aryl = 4′-Cl- (held constant) and b: aryl = 4′-Me or 4′-Br) have been prepared and characterized. These complexes adopt the usual dicarboxylato structural type with a skew-trapezoidal bipyramidal arrangement around the tin atom as revealed by X-ray crystallography.