title: Synthesis, structure and reactions of triarylgermyl anion with alpha,delta-ambiphilic character.
abstract: Benzosilagermacyclobutene bearing two Ar groups 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 Ar(3)Ge(-)[K(+)(cryptand)] with alpha,delta-ambiphilic character consisting of the germyl anion center and the fluorosilyl moieties. In the presence of LiBPh(4).3dme or BF(3).Et(2)O, the germylpotassium is converted back into the benzosilagermacyclobutene.
authors.affiliation: Department of Chemistry, Graduate School of Science, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima 739-8526, Japan. kawachi@sci.hiroshima-u.ac.jp
authors.forename: Atsushi
authors.initials: A
authors.lastname: Kawachi
authors.forename: Koji
authors.initials: K
authors.lastname: Machida
authors.forename: Yohsuke
authors.initials: Y
authors.lastname: Yamamoto