The reaction of [Ti]Cl2 (1) [Ti] = (η5-C5H4SiMe3)2Ti} with two equivalents of LiC≡C-C≡CR (2a: R = C2H5, 2b: R = SiMe3) produces the bis[(σ)-1,3-butadiyne-1-yl] titanocenes [Ti](C≡C-C≡CR)2 (3a: R = C2H5, 3b: R = SiMe3) in high yield; with LiC≡C-SiMe2-C≡CSiMe3 (4) the bis[(σ)-1,4-pentadiyne-1-yl) titanocene [Ti](C≡C-SiMe2-C≡CSiMe3)2 (5) is formed. Compounds 3 and 5 afford with equimolar amounts of Ni(CO)4
钛[Ti] Cl组成的反应2(1)[
钛] =(η 5 -C 5 H ^ 4森达3)2的Ti}与LiC≡CC≡CR(两个当量2a中R = C:2 ħ 5,图2b:R =森达3)产生双[(σ)-1,3-
丁二炔-1-基]二茂
钛钛[Ti](C≡CC≡CR)2(图3a:R = c ^ 2 ħ 5,图3b:R = SiMe 3)高产;与LiC≡C-森达2 -C≡CSiMe 3(4)的双[(σ)-1,4- pentadiyne -1-基)二茂
钛钛[Ti](C≡C-森达2 -C≡CSiMe 3)2(5形成)。化合物3和5可得到等摩尔量的Ni(CO)4(6)杂双
金属
镍-
钛配合物[Ti](C≡CC≡CR)2 })Ni(CO)(7a:R = C 2 H 5,图7b:R =森达3)和[
钛](C≡C-森达2 -C≡CSiMe 3)2 }的Ni(CO)(8在定量的产率)。关于分子8的处理用Co的2个摩尔当量2(