Organotin(IV) complexes with tridentate ligand-IV organotin(IV) complexes with N-salicylidene- and N-pyridoxylideneacylhydrazines. crystal and molecular structure of monochloro-monomethyl [(N-salicylidene- p-methoxybenzoylhydrazinato) ono(2)]tin(IV) methanol

Abstract

A series of mono- and dimethyltin(IV) complexes with N-salicylidene- and N-pyridoxylidene acylhydrazines have been prepared and characterized by IR, UV-vis, 1H NMR and mass spectral techniques. The X-ray crystal structure of monochloro-monomethyl [(N-salicylidene- p-methoxybenzoylhydrazinato)ONO(−2) ]tin (IV) methanol has been determined. In this complex the hydrazone dianion acts as a tridentate ligand and the tin(IV) is six-coordinated in a distorted octahedral geometry with the phenolic oxygen, azomethine nitrogen, amidate oxygen and methyl carbon occupying the equatorial plane while the chloride and methanol oxygen lie in the axial positions. The two molecules in the unit cell are connected by NHO bonds. The structure of both mono- and dimethyltin(IV) complexes in different solvents as well as the effect of solvents on the 1H NMR spectra of dimethyltin(IV) complexes are discussed.