title: Gas-Phase Synthesis of 1-Silacyclopenta-2,4-diene.
abstract: Silole (1-silacyclopenta-2,4-diene) was synthesized for the first time by the bimolecular reaction of the simplest silicon-bearing radical, silylidyne (SiH), with 1,3-butadiene (C4 H6 ) in the gas phase under single-collision conditions. The absence of consecutive collisions of the primary reaction product prevents successive reactions of the silole by Diels-Alder dimerization, thus enabling the clean gas-phase synthesis of this hitherto elusive cyclic species from acyclic precursors in a single-collision event. Our method opens up a versatile and unconventional path to access a previously rather obscure class of organosilicon molecules (substituted siloles), which have been difficult to access through classical synthetic methods.
authors.affiliation: Department of Chemistry, University of Hawai'i at Manoa, Honolulu, HI, 96822, USA.
authors.forename: Tao
authors.identifier: 0000-0003-4101-2385
authors.initials: T
authors.lastname: Yang
authors.affiliation: Department of Chemistry, University of Hawai'i at Manoa, Honolulu, HI, 96822, USA.
authors.forename: Beni B
authors.initials: BB
authors.lastname: Dangi
authors.affiliation: Department of Chemistry, University of Hawai'i at Manoa, Honolulu, HI, 96822, USA.
authors.forename: Aaron M
authors.initials: AM
authors.lastname: Thomas
authors.affiliation: Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien, 974, Taiwan.
authors.forename: Bing-Jian
authors.initials: BJ
authors.lastname: Sun
authors.affiliation: Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien, 974, Taiwan.
authors.forename: Tzu-Jung
authors.initials: TJ
authors.lastname: Chou
authors.affiliation: Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien, 974, Taiwan. hhchang@mail.ndhu.edu.tw.
authors.forename: Agnes H H
authors.initials: AH
authors.lastname: Chang
authors.affiliation: Department of Chemistry, University of Hawai'i at Manoa, Honolulu, HI, 96822, USA. ralfk@hawaii.edu.
authors.forename: Ralf I
authors.identifier: 0000-0002-7233-7206
authors.initials: RI
authors.lastname: Kaiser
keywords: gas-phase reactions; mass spectrometry; reaction dynamics; silole; single-collision conditions