Salalen Titanium Complexes in the Highly Isospecific Polymerization of 1-Hexene and Propylene
作者:Konstantin Press、Ad Cohen、Israel Goldberg、Vincenzo Venditto、Mina Mazzeo、Moshe Kol
DOI:10.1002/anie.201007678
日期:2011.4.4
All lined up: C1‐symmetric octahedral titanium complexes (see structure, Ti dark gray, N blue, O red, I purple) whose labile positions reside in different electronic environments were designed using the readily available salalen ligands. With methylalumoxane as co‐catalyst, highly active catalysts were obtained, which yielded high‐molecular‐weight polypropylene with ultra‐high isotacticities (see 13C NMR
全部列出:使用容易获得的Salalen配体设计了不稳定位置在不同电子环境中的C 1-对称八面体钛络合物(参见结构,Ti深灰色,N蓝色,O红色,I紫色)。以甲基铝氧烷为助催化剂,获得了高活性催化剂,产生了具有超高全同立构规整度(见13 C NMR光谱)和熔融转变的高分子量聚丙烯。