Preparation and X-ray analyses of siloxane-bridged acyclic and 8-membered cyclic phosphaethenes |
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Institution: | 1. Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980-8578, Japan;2. Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336, USA |
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Abstract: | Two Mes1P C (Mes1 = 2,4,6-tri-t-butylphenyl) parts were successfully combined with one or two disiloxane chain(s) by the reaction of 2-silyl-1-phosphaethenyllithium with dichlorotetramethyldisiloxane, and the structures of bis(1-bromo-2-phosphaethenyl)disiloxane and 3,7-diphosphinidene-2,2,4,4,6,6,8,8-octamethyl-1,5-dioxa-2,4,6,8-tetrasilacyclooctane were characterized by spectroscopic analyses and X-ray crystallography. |
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