Thio-Pybox and Thio-Phebox complexes of chromium, iron, cobalt and nickel and their application in ethylene and butadiene polymerisation catalysis
作者:James D. Nobbs、Atanas K. Tomov、Renan Cariou、Vernon C. Gibson、Andrew J. P. White、George J. P. Britovsek
DOI:10.1039/c2dt30324h
日期:——
bis(thiazolyl)pyridine Thio-Pybox ligands and their metal complexes of chromium(III), iron(II), cobalt(II) and nickel(II) has been prepared, as well as a nickel(II) complex containing a monoanionic bis(thiazolinyl)phenyl Thio-Phebox ligand. These new metal complexes have been characterised and used as catalysts, in combination with the co-catalyst MAO, for the polymerisation of ethylene and for the polymerisation
一系列的双(噻唑啉基)-和 双(噻唑基)吡啶制备了硫-Pybox配体及其铬(III),铁(II),钴(II)和镍(II)的金属配合物,以及含单阴离子双(噻唑啉基)苯基硫代铁的镍(II)配合物。 -Phebox配体。这些新的金属络合物已被表征,并与助催化剂MAO一起用作催化剂,用于乙烯的聚合和对乙烯的聚合。丁二烯。在乙烯聚合的情况下,Thio-Pybox和Thio-Phebox金属配合物显示出较低的聚合活性,与相同金属的相关双(亚氨基)吡啶配合物相比要低得多。在聚合丁二烯,几种Thio-Pybox钴(II)配合物显示出很高的活性,远高于具有相同配体的其他金属配合物。对丁二烯聚合反应的催化活性影响最大的是金属,而不是配体,这与乙烯的聚合反应不同。双(亚氨基)吡啶 配体为一系列第一行过渡金属提供了高活性的催化剂。