Tin-119 and carbon-13 NMR studies on tin(IV) xanthates

Abstract

Tin-119 NMR spectroscopy of solutions containing Sn(exa)4 and Sn(isopropxa)4 establishes the existence of the mixed xanthates Sn(exa)n(i-propxa)4-n. Furthermore, evidence is obtained for the existence of mono-, di-, and trihaloxanthates in solutions of appropriate mixtures of the tetraxanthates, dihaloxanthates and tetrahalides. The xanthate ligands undergo temperature dependent monodentate-bidentate exchange about the tin atom which determines the nature of the complexes observed in the various mixtures. © 1983.