Preparation and structural characterization of trimethyltin(iv) tropolonate. Investigation of a rare methyl-migrational dismutation in the solution, solid and liquid states

Abstract

The synthesis and structural characterisation, by low temperature X-ray diffraction and solid-state NMR, of the highly reactive monomeric Me₃Sn(trop) (1) complex has been studied; 1 rearranges into Me₂Sn(trop)₂ (2) and Me₄Sn by methyl-transfer dismutation. Based on the NMR kinetic data it appears that complex 1 demethylates faster in the solid and liquid than in dilute CDCl₃ solution, but with a slower rate than in dilute CD₃OD solution.