- Synthesis and molecular structures of novel isopropyl-substituted oligosilanes
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The cyclotetrasilane [(i-Pr)2Si]4 reacts with K in benzene in the presence of 18-crown-6 to give the 1,4-dipotassio compound K[(i-Pr)2Si]4K (1). The reaction of 1 with (i-Pr)2SiCl2 and Me3SiCl leads to the formation of the sterically crowded oligosilanes, [(i-Pr)2Si]5 (2) and Me3Si[(i-Pr)2Si]4SiMe3 (3), respectively. The molecular structures of the resulting oligosilanes, 2 and 3, display some unusual features.
- Tanaka, Ryoji,Unno, Masafumi,Matsumoto, Hideyuki
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p. 595 - 596
(2007/10/03)
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- Photolysis of 2,3:5,6-Dibenzo-7,7,8,8-tetraisopropyl-7,8-disilabicycloocta-2,5-diene: Evidence for Cyclodimerization of a Disilene
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Evidence for disilene dimerization was obtained by generating tetraisopropyldisilene from the title compound via the photochemical retrodiene process which produced the expected dimerization product, octaisopropylcyclotetrasilane (30percent), in addition to the H-abstraction product, 1,1,2,2-tetraisopropyldisilane (5percent).
- Matsumoto, Hideyuki,Arai, Takeshi,Watanabe, Hamao,Nagai, Yoichiro
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p. 724 - 725
(2007/10/02)
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