Abstract
The oxidative addition reaction has been employed to synthesize heteropolynuclear compounds containing Si-M bonding interaction between the silicon atom of silatrane, pentacoordinate silicon derivative with transannular Si-N dative bond, and the main group element. The reaction of $SnBr_2 with 1-bromosilatrane(1a) in acetonitrile gives the mixture of yellow(2a) and white(2b) solids which were isolated and charaterized by ^1H-NMR, ^{29}Si-NMR, ^{119}Sn-NMR and Mass spectroscopy. The yellow compound was characterized as 1-tribromotinsilatrane which had Si-Sn bonding interaction. The reaction of SnBr2 with 1-bromo-3,7,10-trimethylsilatrane(1b) in methanol gives the Sn(Ⅳ) complex, N[CH_2CH(CH_3)O]_3SiSnBr_3(CH_3OH)_2(3),$ which was characterized by various means.
산화성 첨가반응을 이용하여 실라트란(분자내 Si-N고리횡단 상호작용을 갖는 5-배위의 규소화합물)의 규소원자와 주족원소간에 Si-M 결합작용이 있는 새로운 이종다핵 화합물을 합성하려고 시도하였다. 1-브로모실라트란(1a)과 $SnBr_2를 반응시켜 노란색(2a)과 흰색(2b)의 고체 혼합물을 얻었고 용해도 차에 의해 각각을 분리하여 ^1H-NMR, ^{29}Si-NMR, ^{119}Sn-NMR, Mass스펙트럼으로 규명한 결과 노란색 화합물만이 Si-Sn결합을 갖는 것으로 판명되었다. SnBr_2를 1-브로모-3,7,10-트리메틸실라트란(1b)과도 반응시켜 Si-Sn 결합을 갖는 화합물, N[CH_2CH(CH_3)O]_3SiSnBr_3(CH_3OH)_2(3)$을 분리하여 여러가지 방법으로 확인하였다.