Gas‐Phase Synthesis of 1‐Silacyclopenta‐2,4‐diene |
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Authors: | Dr. Tao Yang Dr. Beni B. Dangi Aaron M. Thomas Dr. Bing‐Jian Sun Tzu‐Jung Chou Prof. Dr. Agnes H. H. Chang Prof. Dr. Ralf I. Kaiser |
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Affiliation: | 1. http://www.chem.hawaii.edu/Bil301/welcome.html 0000-0003-4101-2385 Department of Chemistry, University of Hawai'i at Manoa, Honolulu, HI, USA;2. Department of Chemistry, University of Hawai'i at Manoa, Honolulu, HI, USA;3. Department of Chemistry, National Dong Hwa University, Hualien, Taiwan |
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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 (C4H6) 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. |
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Keywords: | gas-phase reactions mass spectrometry reaction dynamics silole single-collision conditions |
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