Synthesis, characterization, and reactivities of the polysiloxane-bridged binuclear metallocenes tetramethyldisiloxanediylbis(cyclopentadienyltitanium trichloride) and hexamethyltrisiloxanediylbis(cyclopentadienyltitanium trichloride)
作者:Seok Kyun Noh、Gyu-gum Byun、Chul-soo Lee、Dongho Lee、Keun-byung Yoon、Kyoung Seok Kang
DOI:10.1016/0022-328x(96)06128-1
日期:1996.7
, 3, and hexamethyltrisiloxanediylbis(cyclopentadienyl), 4, with two equivalents of TiCl4 gives the title compounds tetramethyldisiloxanediylbis(cyclopentadienyltitanium trichloride), 5 and hexamethyltrisiloxanediylbis(cyclopentadienyltitanium trichloride), 6 respectively. The stoichiometric reaction of 5 and 6 with water results in the formation of new oxygen-bridged metallocenes [(TiCl2)2(μ2-O)-
的tetramethyldisiloxanediylbis(环戊二烯基),dithallium盐的反应3,和hexamethyltrisiloxanediylbis(环戊二烯基),4,用TiCl 4的两个当量4,得到标题化合物tetramethyldisiloxanediylbis(环戊二烯基三氯化),5和hexamethyltrisiloxanediylbis(环戊二烯基三氯化),6分别。的化学计量反应5和6与水的结果的新氧桥连金属茂的形成[(的TiCl 2)2(μ 2 -O) - (η 5 -C 5 H ^ 4)2 - μ 2 - (森达2)2 O],7,和[(的TiCl 2)2(μ 2 -O) - (η 5 -C 5 H ^ 4)2 - μ 2 - (森达2)3 Ô 2 }],8。此外,7和8与另一当量的水进一步反应或5和6的处理用过量的水的量产生了具有钛的金属茂化合物的形成4 ö 4环[(的TiCl)2(μ