Synthesis, characterization, and styrene polymerization performance of organo yttrium complexes supported by imino-fuctionalized indenyl ligand
作者:Yun-Jie Luo、Meng Deng、Jue Chen
DOI:10.1080/24701556.2017.1284113
日期:2017.8.3
Amine elimination of Y[N(SiHMe2)2]3(THF)2 with the imino-functionalized indenyl ligand C9H7CH2CH = N-2,6-iPr2C6H3 in 1:1 and 1:2 molar ratio afforded the mono-indenyl-ligated yttrium bis(silylamide) complex (C9H6CH2CH = N-2,6-iPr2C6H3)Y[N(SiHMe2)2]2 (4) and the neutral yttrium complex (C9H6CH2CH = N-2,6-iPr2C6H3)(C9H6CH = CH-N-2,6-iPr2C6H3)Y (5), respectively. Both complexes were characterized by elemental
亚氨基官能化的茚基配体C 9 H 7 CH 2 CH = N-2,6- i Pr 2 C 6 H 3的1:1和Y消除Y [N(SiHMe 2)2 ] 3(THF)2的胺摩尔比为1:2,得到单茚基连接的钇双(甲硅烷基酰胺)配合物(C 9 H 6 CH 2 CH = N-2,6- i Pr 2 C 6 H 3)Y [N(SiHMe 2)2 ] 2(4)和中性钇配合物(C 9 H 6 CH 2 CH = N-2,6- i Pr 2 C 6 H 3)(C 9 H 6 CH = CH-N-2,6- i Pr 2 C 6 H 3)Y(5)。两种配合物均通过元素分析和NMR表征。X射线单晶结构衍射表明,在中心金属5是由两个茚基配体和两个氮原子中η四配位5 /κ 1-模式,如果茚基环被视为占据一个独立的顶点。在Al i Bu 3的存在下,并被一等摩尔量的[Ph 3 C] [B(C 6 F 5)4 ]活化,络合物4表现出对苯乙烯间同聚合的活性。