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학술발표회초록보기

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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis and Stability of Trianion species

등록일
2012년 2월 15일 10시 33분 56초
접수번호
0389
발표코드
INOR.P-157 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
무기화학
저자 및
공동저자
송준현, 조현모, 이명의
연세대학교 화학 및 의화학과, Korea

The syntheses and structures of organosilicon lithium compounds have been the subject of much interest. Recently a few dilithiosilyl compounds including their synthetic applications and ab initio calculation, etc. were reported. However, trilithiosilane has not been reported yet. Last ten years we have synthesized stable halosilylenoids and dilithiohalosilanes formed from the reduction of trihalosilanes with strong reducing agents. These results prompted us to investigate a synthesis of trilithiosilanes. The reaction of trihalo[tris(trimethylsilyl)methyl]silane (TsiSiX3, Tsi=C(SiMe3)3, X=Br, Cl) with more than 6 equivalents of lithium naphthalenide (LiNp) in THF at -78℃ gave trilithiosilane together with halodilithiosilane and halolithiosilane which are indirectly monitored by GC/MS after adding excess MeOH into reaction mixture. Transmetalation of lithiosilanes with MgBr2, tBuMgCl and their thermal stability were also investigated. In this presentation, synthesis of trilithiosilane and its transmetalation will be discussed in detail.


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