title: Unusual formation of a N-heterocyclic germylene via homolytic cleavage of a C-C bond.
abstract: Reaction of the monoanionic radical salt IP˙(-)K(+) (IP = (Py)CH(=NR); Py = C5H4N, R = 2,6-iPr2C6H3; α-iminopyridine) with GeCl2(dioxane) afforded compound (IPGeCl)2 (1) which produced red blocks of IPGe: (2), when treated with KC8 in toluene. 1 is a digermylene formed via C-C coupling between two carbon-centered radicals. 2 can be considered as an analogue of a N-heterocyclic carbene, which exhibits a five-membered GeC2N2 ring with one C=C double bond. 2 is formed by two-electron reduction of 1 with cleavage of the two Ge-Cl bonds and the central C-C single bond.
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China. hpzhu@xmu.edu.cn.
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Kartik Chandra
authors.initials: KC
authors.lastname: Mondal
authors.forename: Peter
authors.initials: P
authors.lastname: Stollberg
authors.forename: Hongping
authors.initials: H
authors.lastname: Zhu
authors.forename: Herbert W
authors.initials: HW
authors.lastname: Roesky
authors.forename: Regine
authors.initials: R
authors.lastname: Herbst-Irmer
authors.forename: Dietmar
authors.initials: D
authors.lastname: Stalke
authors.forename: Heike
authors.initials: H
authors.lastname: Fliegl