Coordination of the alkyl‐substituted alkynes Me3SiC2CH2R (1: R=SiMe3; 2: R=N(SiMe3)2) to titanocene centres [Cp′2Ti] (Cp′=Cp, Cp*) yields stable alkyne complexes of the type Cp′2Ti(η2‐Me3SiC2CH2R) (3: Cp′=Cp, R=SiMe3; 5: Cp′=Cp, R=N(SiMe3)2; 6: Cp′=Cp*, R=SiMe3) that are not prone to alkyne/allene isomerisation. When reacting alkyne 2 with Cp*2TiCl2 and Mg formation of the complex Cp*2Ti(III)(η3‐Me3SiC2CH2) (7)
烷基取代的
炔烃的协调我3的SiC 2 CH 2 R(1:R =森达3 ; 2:R = N(森达3)2),以二茂
钛中心[CP' 2的Ti](CP'=的CP中,CP * ),得到式CP'的稳定炔复合物2的Ti(η 2 -Me 3的SiC 2 CH 2 R)(3:CP'=的CP,R =森达3 ; 5:CP'=的CP,R = N(森达3)2 ; 6:CP'= CP *,R = SiMe 3)不易发生炔/
丙二烯异构化的化合物。当反应炔 2再用CP * 2的TiCl 2和Mg形成复杂的CP *的2
钛(III)(η 3 -Me 3的SiC 2 CH 2)(7),其显示配位到一个
钛炔丙基单元III中心发生。所有复合物完全表征,分子结构为5,6,和7进行讨论。