{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,14]],"date-time":"2026-05-14T01:16:45Z","timestamp":1778721405374,"version":"3.51.4"},"reference-count":63,"publisher":"Wiley","issue":"30","license":[{"start":{"date-parts":[[2014,6,26]],"date-time":"2014-06-26T00:00:00Z","timestamp":1403740800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2014,7,21]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>An acyl\u2010functionalized phosphasilene, LSi(CO<jats:italic>t<\/jats:italic>Bu)\uf8feP(SiMe<jats:sub>3<\/jats:sub>) (L=PhC(N<jats:italic>t<\/jats:italic>Bu)<jats:sub>2<\/jats:sub>) was synthesized on a new route by the addition of <jats:italic>t<\/jats:italic>BuCOCl to the phosphinosilylene LSiP(SiMe<jats:sub>3<\/jats:sub>)<jats:sub>2<\/jats:sub> and subsequent Me<jats:sub>3<\/jats:sub>SiCl elimination. DFT studies elucidated its molecular structure, the influence of the acyl group on UV\/Vis transitions, and revealed the mechanism. The intermediate LSi(CO<jats:italic>t<\/jats:italic>Bu)ClP(SiMe<jats:sub>3<\/jats:sub>)<jats:sub>2<\/jats:sub>, with a five\u2010coordinate silicon center, was characterized by NMR spectroscopy and X\u2010ray analysis. On the other hand, phosphasilene LSi(SiMe<jats:sub>3<\/jats:sub>)\uf8feP(SiMe<jats:sub>3<\/jats:sub>) reacted with <jats:italic>t<\/jats:italic>BuCOCl by a [2+2] cycloaddition of the silicon\u2013phosphorus double bond and the carbon\u2013oxygen double bond in addition to Me<jats:sub>3<\/jats:sub>SiCl elimination, thereby affording the novel, fully characterized compound LSi(SiMe<jats:sub>3<\/jats:sub>)[P\uf8feC(<jats:italic>t<\/jats:italic>Bu)O] bearing a Si\u2010P\u2010C\u2010O heterocycle with a phosphorus\u2013carbon double bond. DFT studies suggest that two mechanisms occur simultaneously.<\/jats:p>","DOI":"10.1002\/chem.201402693","type":"journal-article","created":{"date-parts":[[2014,6,26]],"date-time":"2014-06-26T12:28:55Z","timestamp":1403785735000},"page":"9312-9318","source":"Crossref","is-referenced-by-count":30,"title":["New Route to Access an Acyl\u2010Functionalized Phosphasilene and a Four\u2010Membered Si\u2010P\u2010C\u2010O Heterocycle"],"prefix":"10.1002","volume":"20","author":[{"given":"Nora 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