Synthesis, structure and reactions of triarylgermyl anion with α,δ-ambiphilic character

Abstract

Benzosilagermacyclobutene bearing two Argroups on the germanium atom [Ar = o-(fluorodimethylsilyl)phenyl] undergoes cleavage of the Ge–Si bond with KF in the presence of a cryptand to form Ar₃Ge⁻[K⁺(cryptand)] with α,δ-ambiphilic character consisting of the germyl anion center and the fluorosilyl moieties. In the presence of LiBPh₄·3dme or BF₃·Et₂O, the germylpotassium is converted back into the benzosilagermacyclobutene.