1,2,3,4-Tetra-tert-butyl-4-trimethylsilyl-4-sila-2-cyclobuten-1-yl: A Quantum Mechanical and ESR Study
作者:Günther Maier、Armin Kratt、Andreas Schick、Hans Peter Reisenauer、Frédérique Barbosa、Georg Gescheidt
DOI:10.1002/1099-0690(200004)2000:7<1107::aid-ejoc1107>3.0.co;2-8
日期:2000.4
Trisilane 7 has been synthesized as a potential photochemical precursor of tetra-tert-butylsilatetrahedrane (5) and/or tetra-tert-butylsilacyclobutadiene (6). Astonishingly, only one Si,Si bond is broken upon irradiation of 7 and the silacyclobutenyl radical 9 can be identified as the reaction product. The structure of radical 9, which in the absence of oxygen is persistent even at room temperature
已合成三硅烷 7 作为四叔丁基硅杂四面体 (5) 和/或四叔丁基硅杂环丁二烯 (6) 的潜在光化学前体。令人惊讶的是,只有一个 Si,Si 键在 7 的照射下断裂,硅杂环丁烯基 9 可以被确定为反应产物。自由基 9 的结构在没有氧的情况下即使在室温下也能持久存在,已通过其实验和计算 ESR 光谱的比较阐明。