Vanadium chlorides supported by BIAN (BIAN = bis(arylimo)-acenaphthene) ligands: Synthesis, characterization, and catalysis on ethylene polymerization
作者:Shu-yun Xu、Xue-meng Chen、Li-cheng Huang、Feng Li、Wei Gao
DOI:10.1016/j.poly.2019.01.041
日期:2019.5
Several vanadium chlorides bearing bis(arylimino)-acenaphthene (BIAN) ligands, (2,6-Me2C6H3-BIAN)V(THF)Cl3 (1), (2,6-Et2C6H3-BIAN)V(THF)Cl3 (2), (2,6-iPr2C6H3-BIAN)V(THF)Cl3 (3), [3,5-(CF3)2C6H3-BIAN]V(THF)Cl3 (4), [4-OMe-C6H4-BIAN]V(THF)Cl3 (5), and [2,6-(Ph2CH)2-4-OMeC6H2-BIAN]V. (THF)Cl3 (6) were synthesized by direct reaction of VCl3(THF)3 with corresponding BIAN ligands. All these complexes were
摘要几种带有双(芳基)-ena(BIAN)配体的氯化钒,(2,6-Me2C6H3-BIAN)V(THF)Cl3(1),(2,6-Et2C6H3-BIAN)V(THF)Cl3(2 ),(2,6-iPr2C6H3-BIAN)V(THF)Cl3(3),[3,5-(CF3)2C6H3-BIAN] V(THF)Cl3(4),[4-OMe-C6H4-BIAN] V(THF)Cl 3(5)和[2,6-(Ph2CH)2-4-OMeC6H2-BIAN] V。通过使VCl3(THF)3与相应的BIAN配体直接反应合成(THF)Cl3(6)。所有这些复合物均通过元素分析和FT-IR光谱表征。通过X射线晶体学鉴定1,2,4的分子结构,其中六个配位的钒金属中心呈扭曲的八面体几何形状,其中配位THF的氧原子,二亚胺配体的两个氮原子和一个氯原子在同一平面上。当用AlEt2Cl活化时,这些钒配合物对乙烯聚合显示出高催化活