Synthesis, characterization, and catalytic behaviours of β-carbonylenamine-derived [O−NS]TiCl3 complexes in ethylene homo- and copolymerization
作者:Xiao-Hong Yang、Zheng Wang、Xiu-Li Sun、Yong Tang
DOI:10.1039/b910868h
日期:——
A series of [OâNS]TiCl3 complexes 5aâl derived from β-carbonylenamine were synthesized and characterized. In the presence of modified methylaluminoxane (MMAO), complexes 1, 5aâi and 5l are highly active for ethylene polymerization and copolymerization of ethylene with 1-hexene, CPE and NBE. Up to 5.12 à 106 g molâ1 hâ1 atmâ1 of activity for the copolymerization of ethylene with 1-hexene is achieved with a 28.9 mol% incorporation ratio.
合成并表征了一系列来自β-羰基胺的[OâNS]TiCl3配合物5aâl。在改性甲基铝氧烯(MMAO)的存在下,配合物1、5aâi和5l对乙烯聚合及乙烯与1-己烯、CPE和NBE的共聚合表现出高活性。在乙烯与1-己烯的共聚合中,活性达到5.12 × 10^6 g molâ1 hâ1 atmâ1,聚合比例达到28.9 mol%。
Synthesis, Characterization, and Highly Selective Ethylene Dimerization to 1-Butene of [O−NX]Ni(II) Complexes
作者:Chongjie Xu、Qi Shen、Xiuli Sun、Yong Tang
DOI:10.1002/cjoc.201100443
日期:2012.5
series of nickel(II) complexes have been synthesized and characterized. Molecular structure analysis exhibits that a square planar geometry around nickel is adopted. Upon activation with MAO, these nickel(II) complexes are efficient in catalyzing the ethylenedimerization, providing 1‐butene with an activity of up to 1.4×107 g/(mol·h·atm). The heteroatoms of the sidearm in the complexes were proved to
已经合成和表征了一系列镍(II)配合物。分子结构分析表明,采用了围绕镍的正方形平面几何形状。通过MAO活化后,这些镍(II)络合物可有效催化乙烯二聚,从而提供1-丁烯,其活性最高可达1.4×10 7 g /(mol·h·atm)。络合物中侧臂的杂原子被证明对1-丁烯的活性和选择性有很大的影响。