Synthesis and structural analysis of aryloxo-modified trinuclear half-titanocenes, and their use as catalyst precursors for ethylene polymerisation
作者:Qing Yan、Ken Tsutsumi、Kotohiro Nomura
DOI:10.1039/c7ra07581b
日期:——
half-titanocenes, [Cp′TiX2(O-2,4-R2C6H2)-6-CH2}]3N [X = Cl, R = Me, Cp′ = Cp (1); X = Cl, R = tBu, Cp′ = Cp (4), Cp* (5), tBuC5H4 (6), 1,2,4-Me3C5H2 (7); X = Me, Cp′ = Cp*, R = Me (8), tBu (9)] and the related bimetallic complexes, [Cp′TiCl2(O-2,4-Me2C6H2)-6-CH2}][Cp′TiCl(O-2,4-Me2C6H2)-6-CH2}2]N [Cp′ = Cp* (2), 1,2,4-Me3C5H2 (3)], have been prepared and identified. Structures of 1–5, 7 and 9 were determined by
一系列三核半钛茂[Cp'TiX 2 (O-2,4-R 2 C 6 H 2)-6-CH 2 }] 3 N [X = Cl,R = Me,Cp'= Cp (1); X = Cl,R = t Bu,Cp'= Cp(4),Cp *(5),t BuC 5 H 4(6),1,2,4-Me 3 C 5 H 2(7); X = Me,Cp'= Cp *,R = Me(8),t Bu(9)]和相关的双金属配合物[Cp'TiCl 2 (O-2,4-Me2 C 6 H 2)-6-CH 2 }] [Cp'TiCl (O-2,4-Me 2 C 6 H 2)-6-CH 2 } 2 ] N [Cp'= Cp *( 2) ,1,2,4-Me 3 C 5 H 2( 3)]的制备和鉴定。的结构1-5, 7和9是由X-射线晶体学确定,并且所有的复合物折叠周围钛扭曲的四面体几何形状。这些复合物( 2–9)在溶液中是稳定的,除了Cp类似物(