Complexes of Ge(IV)- and Sn(IV)-fluorides with cyclic and acyclic carbenes: bis(dialkylamino)-difluoromethylenes as carbene sources

Carbene complexes of Ge(IV)- and Sn(IV)-fluorides have been synthesized by oxidative addition of 2,2-difluoro-1,3-dimethylimidazolidine and bis(dimethylamino)difluoromethane to GeCl(2)?dioxane and SnF(2). Chloride analogs of the Ge(IV) complexes were also isolated. All compounds were characterized in the solid state by single-crystal X-ray diffraction.