Synthesis and Structure of Group 4 Symmetric Amidinate Complexes and Their Reactivity in the Polymerization of α-Olefins
作者:Tatyana Elkin、Naveen V. Kulkarni、Boris Tumanskii、Mark Botoshansky、Linda J. W. Shimon、Moris S. Eisen
DOI:10.1021/om4006998
日期:2013.11.11
various nitrogen substituents on amidines were tuned in order to obtain group 4 mono- and bis(amidinate) dimethylamido or chloride complexes. The amidinate dimethylamido and chloride complexes were prepared, and their solid-state as well as their solution-state structures were studied. After the activation by MAO, these complexes were tested in the polymerization of propylene and ethylene. A noticeable
调整am上各种氮取代基的空间特性,以获得第4组单-和双(ami酰胺基)二甲基酰胺基或氯化物配合物。制备了in基二甲基酰胺基和氯化物的络合物,并研究了它们的固态及溶液态结构。在通过MAO活化后,这些配合物在丙烯和乙烯的聚合反应中进行了测试。观察到the碳和氮取代基对催化剂活性和所得聚合物性能的显着影响。此外,考虑到ESR-C 60和MALDI-TOF实验的结合,提出了乙烯聚合过程的合理机理,从而阐明了催化物质的性质。