title: A cyclic germadicarbene ("germylone") from germyliumylidene.
abstract: By employing the chelate dicarbene 1, the new chlorogermyliumylidene complex 2 could be synthesized and isolated in 95% yield. Dechlorination of 2 with sodium naphthalenide furnishes the unique cyclic germadicarbene 3 which could be isolated in 45% yield. Compound 3 is the first isolable Ge(0) complex with a single germanium atom stabilized by a dicarbene. Its molecular structure is in accordance with DFT calculations which underline the peculiar electronic structure of 3 with two lone pairs of electrons at the Ge atom.
authors.affiliation: Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin , Strasse des 17. Juni 135, Sekr. C2, D-10623 Berlin, Germany.
authors.forename: Yun
authors.initials: Y
authors.lastname: Xiong
authors.forename: Shenglai
authors.initials: S
authors.lastname: Yao
authors.forename: Gengwen
authors.initials: G
authors.lastname: Tan
authors.forename: Shigeyoshi
authors.initials: S
authors.lastname: Inoue
authors.forename: Matthias
authors.initials: M
authors.lastname: Driess