Monometallic and Bimetallic Titanium κ<sup>1</sup>-Amidinate Complexes as Olefin Polymerization Catalysts
作者:Richard A. Collins、Adam F. Russell、Richard T. W. Scott、Raffaele Bernardo、Gerard H. J. van Doremaele、Alexandra Berthoud、Philip Mountford
DOI:10.1021/acs.organomet.7b00225
日期:2017.6.12
4-C6H4C(NiPr2)N}2Cp*TiMeC(NiPr)2}2][BArF4]2. Detailed olefin copolymerization studies for forming EPDM from ethylene, propylene, and certain dienes were carried out with mono- and bimetallic catalysts and borate and borane activators. Catalyst–activator effects on polymerization productivity and polymer composition relationships were mapped. Bimetallic catalysts 2 and 3 showed cooperative effects based on electronic
一系列的环戊二烯基κ 1 -amidinate钛络合物的Cp *的Ti NC(氩- [R)N我镨2 }我2(AR - [R = 4-C 6 H ^ 4 R,其中R = H(1 -我),CF合成了3(5-Me),t Bu(6-Me)或NMe 2(7-Me)在)基配体中具有不同对位取代基的化合物,并与三种双金属类似物进行了结构表征:1,4-C 6 H 4 C(N i Pr 2)N}2 Cp * TiMe 2 } 2(2-Me),1,3-C 6 H 4 C(N i Pr 2)N} 2 Cp * TiMe 2 } 2(3-Me)和CH 2 1,4-C 6 H ^ 4 -C(N我镨2)N} 2 的Cp *时间2 } 2(4-ME)。使用13 C NMR光谱,密度泛函理论和分子中原子的量子理论评估各种NC(Ar RN i Pr 2配体和Ar R基团对位取代基的影响。的反应1 -我和某些