Preparation of titanium pentamethylcyclopentadienyl trialkyls and crystal structure of tribenzylpentamethylcyclopentadienyltitanium, showing some evidence of a CH2? Ti interaction
Titanium pentamethylcyclopentadienyl trialkyls (η5-C5Me5)TiR3(R = Me, CH2SiMe3, C6F5, and CH2Ph) are easily obtained by conventional alkylation of the trichloro analogue; the structure of the tribenzyl derivative, determined by X-ray methods, shows some evidence of a CH2⋯ Ti interaction.
Cyclopentadienyl titanium hydroxylaminato complexes as highly active catalysts for the polymerization of propylene
作者:Andrew P. Dove、Xiangjin Xie、Robert M. Waymouth
DOI:10.1039/b418778d
日期:——
Half sandwich complexes of titanium bearing eta1 or eta2 bound nitroxide ligands are highly active catalysts for the polymerisation of propylene to high molecular weight atactic poly(propylene).