Novel vanadium(III) complexes with tridentate phenoxy‐phosphine [O,P(O),O] ligands: Synthesis, characterization, and catalytic behavior of ethylene polymerization and copolymerization with 10‐undecen‐1‐ol
作者:Sen‐Wang Zhang、Gui‐Bao Zhang、Ling‐Pan Lu、Yue‐Sheng Li
DOI:10.1002/pola.26441
日期:2013.2.15
A series of novel vanadium(III) complexes bearing tridentate phenoxy‐phosphine [O,P,O] ligands and phosphine oxide‐bridged bisphenolato [O,PO,O] ligands, which differ in the steric and electronic properties, have been synthesized and characterized. These complexes were characterized by Fourier transform infrared spectroscopy (FTIR) and mass spectra as well as elemental analysis. Single‐crystal X‐ray
一系列带有三齿苯氧基膦[O,P,O]配体和氧化膦桥接双酚[O,PO,O]配体的新型钒(III)配合物在空间和电子性质方面有所不同合成和表征。这些复合物的特征在于傅立叶变换红外光谱(FTIR)和质谱以及元素分析。X射线单晶衍射表明,配合物3c和4e在钒中心周围采用八面体几何形状。在Et 2 AlCl作为助催化剂的存在下,这些络合物显示出高达22.8 kg PE / mmol V的高催化活性。.h.bar用于乙烯聚合,并生产高分子量聚合物。在[O,P,O]配体的磷原子上引入额外的氧原子已导致空间/电子效应方面的重大变化,这对聚合性能产生了影响。3c和4c / Et 2AlCl催化系统可耐受高温(70°C)并生成单峰聚乙烯,表明这些催化剂的单中心行为。通过用等摩尔量的烷基铝进行预处理,可以将功能性α-烯烃10-十一碳烯-1-醇有效地掺入聚乙烯链中。在温和条件下,10-十一碳烯-1-醇的掺入量很容易达到14