title: Low-valent Ge(2) and Ge(4) species trapped by N-heterocyclic gallylene.
abstract: Much π and no σ: quantum chemical calculations showed that the Ge atoms of the Ga(2)Ge(2) core in Ge(2)[Ga(DPP)](2) are not bonded by σ interactions, but rather by a transannular π interaction. The compound is formed by reduction of (PCy(3))⋅GeCl(2) with Ga(DDP)/KC(8) which also yielded a further product Ge(4)[Ga(DPP)](2) with a Ge(4) tetrahedron (DDP=HC(CMeNC(6)H(3)-2,6-iPr(2))(2)).
authors.affiliation: Lehrstuhl für Anorganische Chemie II, Organometallics and Materials, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Germany.
authors.forename: Adinarayana
authors.initials: A
authors.lastname: Doddi
authors.forename: Christian
authors.initials: C
authors.lastname: Gemel
authors.forename: Manuela
authors.initials: M
authors.lastname: Winter
authors.forename: Roland A
authors.initials: RA
authors.lastname: Fischer
authors.forename: Catharina
authors.initials: C
authors.lastname: Goedecke
authors.forename: Henry S
authors.initials: HS
authors.lastname: Rzepa
authors.forename: Gernot
authors.initials: G
authors.lastname: Frenking