Synthesis and Properties of Stereoregular Cyclic Polysilanols: cis-[PhSi(O)OH]4, cis-[PhSi(O)OH]6, and Tris-cis-tris-trans-[PhSi(O)OH]12

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• 作者：Olga I. Shchegolikhina ; Yulia A. Pozdnyakova ; Yulia A. Molodtsova ; Sergey D. Korkin ; Sergey S. Bukalov ; Larissa A. Leites ; Konstantin A. Lyssenko ; Alexandr S. Peregudov ; Norbert Auner ; and Dimitris E.
• 刊名：Inorganic Chemistry
• 出版年：2002
• 出版时间：December 16, 2002
• 年：2002
• 卷：41
• 期：25
• 页码：6892 - 6904
• 全文大小：481K
• 年卷期：v.41,no.25(December 16, 2002)
• ISSN：1520-510X

文摘

New stereoregular cyclic polysilanols of the general formula [PhSi(O)OH]n (n = 6 and 12) have been selectivelyobtained in high yields by the reaction of cagelike oligophenylmetallasiloxanes with dilute solutions of hydrochloricacid at low temperatures. An alternative method was used to prepare cis-[PhSi(O)OH]₄ from sodium phenylsiloxanolate,cis-{(Na⁺)₄[PhSi(O)O^-]₄}·(1-butanol)_x. All compounds were fully characterized by NMR and IR spectroscopy andmolecular weight determinations. The structure of cis-[PhSi(O)OH]₆ was confirmed by single-crystal X-ray analysis.Furthermore, a series of stereoregular cyclosiloxanes containing triorganylsiloxy groups at each silicon atom wasprepared by the reactions of the cyclic polysilanols with triorganylchlorosilanes Me₃SiCl, Me₂ViSiCl, and Me₂(CH₂Cl)SiCl.