title: Silole Silylene Route to NHC-Stabilized Fused 1-Silabicycles and 1,1'-Spirobisiloles.
abstract: The reaction of an NHC-stabilized silole silylene (1, 1-silacyclopentadienylidene) with one equivalent of internal acetylenes resulted in the formation of NHC-stabilized 1-silabicyclo[3.2.0]hepta-1,3,6-trienes, which subsequently reacted with one equivalent of the acetylene to yield an aryl-substituted 1,1'-spirobisilole (SBS). The SBSs can also be prepared by reaction of the NHC-stabilized silole silylene 1 with two equivalents of the acetylenes in good yields. The electronic structures of these SBSs have been studied by UV/Vis and emission spectroscopy, as well as DFT calculations.
authors.affiliation: State Key Laboratory of Elemento-Organic Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, P.R. China.
authors.forename: Tianhao
authors.initials: T
authors.lastname: Li
authors.affiliation: State Key Laboratory of Elemento-Organic Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, P.R. China.
authors.forename: Jianying
authors.initials: J
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Elemento-Organic Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, P.R. China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, P.R. China.
authors.forename: Chunming
authors.initials: C
authors.lastname: Cui
keywords: bicycloheptatrienes; nitrogen heterocycles; silicon; silylenes; spiro compounds