Spin chemistry of organometallic compounds <strong class="boldFont">5</strong>. Interaction of N-bromohexamethyl disilazane with substituted silyl hydrides期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Spin chemistry of organometallic compounds 5. Interaction of N-bromohexamethyl disilazane with substituted silyl hydrides

Authors:	Marc B Taraban Vladimir I Rakhlin Tatyana A Podgorbunskaya Rudolf G Mirskov Larisa V Sherstyannikova

Institution:	^a Institute of Chemical Kinetics and Combustion, Institutskaya Street 3, Novosibirsk 630090, Russia ^b A.E. Favorsky Irkutsk Institute of Chemistry, Favorsky Street 1, Irkutsk 664033, Russia ^c Novosibirsk State University, Pirogova Street 2, Novosibirsk 630090, Russia

Abstract:	Reaction of N-bromohexamethyl disilazane (Me₃Si)₂NBr with substituted triorganyl silanes R¹R²R³SiH results in asymmetric disilazanes Me₃SiNHSiR¹R²R³ and bromination product, bromotrimethyl silane Me₃SiBr. The reaction has demonstrated an unusual dependence on specific solvation. In benzene, bromination occurs immediately after mixing of the reagents, while in cyclohexane, the reaction products are formed only under UV-irradiation. Application of photoinduced CIDNP method has shown that the mechanism of bromination of triorganyl silanes is comprised of a series of consecutive radical stages involving N-centered disilazanyl (Me₃Si)₂N and Si-centered silyl R¹R²R³Si radicals.

Keywords:	N-bromohexamethyl disilazane Silyl hydrides Silazanes Free radicals CIDNP
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