柄型金属有机化合物（Ⅰ）──硅桥联二（1－茚基）和四氢茚基钛化合物的合成及结构

Ansa-Metallocene Derivatives(Ⅰ)──Syntheses and Structures of Sila-bridged Bis(1-indenyl) and Tetrahydroindenyl Titanium Complexes

通过１，３－二（１－茚基）四甲基二硅氧烷的双锂盐与ＴｉＣｌ４·２ＴＨＦ反应制得硅桥联二（１－茚基）钛化合物（Ｍｅ２ＳｉＯＳｉＭｅ２）［Ｉｎｄ］２ＴｉＣｌ２（１），对其催化氢化得到相应的四氢茚基化合物（Ｍｅ２ＳｉＯＳｉＭｅ２）［ＩｎｄＨ４］２ＴｉＣｌ２（２）。对化合物１和２的单晶进行了Ｘ射线衍射结构分析，它们的晶体都属单斜晶系，Ｐ２１／ｎ空间群。

The chiral ansa-metallocene derivative sila-bridged bis(1-indenyl)titanium dichloride(Me2SiOSiMe2)[Ind]2TiCl2(1)has been prepared by the reaction of the dilithium salt of 1,3-bis(1-indenyl) tetramethyl disiloxane with TiCl4·2THF.After catalytic hydrogenation,1 has been converted to the corresponding tetrahydroindenyl complex (Me2SiOSiMe2)·[IndH4]2TiCl2(2).The crystal structures of 1 and 2 have been determined by X-ray diffraction analysis.Both the crystals belong to monolinic, space group P21/n.For 1,a=1.0546(4)nm,b=1.3773(7)nm,c=1. 5493(5) nm;β=99.05(3)°,V=2.222(1)nm3,Z=4,Dc =1.43 g/cm￣3,R=0.033.For2, a=1.0911(2)nm,b=1.3815 (3)nm,c=1.5886(2)nm;β=101. 39 (1)°,V=2.347(1)nm￣3,Z=4,D_c=1.378g/m￣3,R=0.053.