Supersilylierte Disilene, Cyclotri-, Cyclotetra- sowie Tetrahedrosilane: Erzeugung, Strukturen, Bildungswege
作者:Nils Wiberg、Christian M.M. Finger、Harald Auer、Kurt Polborn
DOI:10.1016/0022-328x(96)06222-5
日期:1996.8
is not found. Mechanistic indications of the transformation of 7 into 1 came from studies of the reaction of the disilane RHBrSi-SiBrHR (3) with RNa at low temperatures, which leads to the cyclotrisilanes cis,trans-(SiHR)3 (13; 59 mol.%) and [SiHRSiHRSiR′R] (14, 5 mol.%; R′ SiH2R) as well as to the cyclotetrasilanes cis,cis,trans-, cis,trans,cis- and trans,trans,trans-(SiHR)4 (16, 17 and 18;
为了获得有关反应2RBr机理信息2 SiSiBr 2 R(5)+ 2RNa→2RBr + 2NaBr + R 4的Si 4(1),从而导致在低温下tetrasupersilyl- tetrahedro -tetrasilane(R硅吨卜3高超甲硅烷基),5和RNa在PhCCPh的存在下发生反应,这可能是二硅烷基〉SiSi二硅烷基erSiSi的陷阱。反式-RBrSiSiBrR(7)和PhCCPh的[2 + 2]-环加合物(8)的分离证明了二烯(7)的中间存在。找不到二甲炔RSiSiR(12)和PhCCPh的环加合物。机械转变的机械指示7到1来自乙硅烷RHBrSi-SiBrHR(的反应的研究3)与RNA在低温下,这导致cyclotrisilanes顺,反- (SiHR)3(13 ; 59摩尔%)和[SiHR SiHRSiR'R](14,5摩尔%; - [R '的SiH