MEASUREMENT OF THE HYDROLYSIS OF TIN TETRAACETATE BY PROTON AND C-13 NMR-SPECTROSCOPY

Solid-state C-13 CP/MAS spectral analysis of the hydrolysis products o f Sn(OAc)4 allowed the hydrolysis intermediates, Sn(OH)(OAC)3, Sn(OH)2 (OAC)2 and Sn(OH)3(OAc), to be identified. The results show that the h ydrolysis consists of three steps; the first and second steps are cons ecutive reactions and the third is reversible. Intermolecular exchange between hydrolysis products (i.e. Sn(OAc)4, Sn(OH)(OAC)3, Sn(OH)2(OAc )2 and Sn(OH)3(OAc),) and acetic acid was observed from the measuremen t of H-1 and C-13 solution spectra at varied temperatures in CD2Cl2 wi th DELTAG(double dagger)248 50.5 kJ mol-1.