Anion Chemistry of Silyl-Substituted π-Electron Systems Based on Four- and Five-Membered Rings
Anion Chemistry of Silyl-Substituted π-Electron Systems Based on Four- and Five-Membered Rings
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基于四元环和五元环的甲硅烷基取代的π电子体系的阴离子化学
DOI：
10.5059/yukigoseikyokaishi.57.945
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发表时间：
1999
影响因子：
0.2
通讯作者：
Tsukasa Matsuo
中科院分区：
文献类型：
--
作者：
A. Sekiguchi;Tsukasa Matsuo
硅环低聚炔与[Mn(CO)3(Me-Cp)]的分子内环化反应产生了多种基于四元环和五元环的硅基取代ƒÎ-electron体系。硅基取代的氟烯、二亚甲基环丁烯、[4]放射性二烯衍生物在极性溶剂中与金属锂还原得到相应的阴离子，而三亚甲基环戊烯衍生物得到相应的四阴离子。这些阴离子被分离为相应ƒÎ-electron体系的二锂盐或四锂盐。晶体和溶液中的结构表明，附着在ƒÎelectron体系上的硅原子对得到的聚阴离子的稳定起着重要的作用。
The intramolecular cyclization of silacyclooligoynes with [Mn(CO)3(Me-Cp)] produced a variety of silyl-substituted ƒÎ-electron systems based on fourand five-membered rings. The silyl-substituted fulvene, dimethylenecyclobutene, [4] radialene derivatives afforded the corresponding dianion species by reduction with lithium metal in polar solvents, whereas the trimethylenecylopentene derivative gave a tetraanion . These anion species were isolated as dilithium or tetralithium salts of the corresponding ƒÎ-electron systems . The structures both in crystals and in solution reveal that the silicon atoms attached to the ƒÎelectron systems play an important role for the stabilization of the resulting polyanions .