Novel titanium (IV) complexes with 1,2-diolate ligands: Synthesis, structure and catalytic activities in ultra-high molecular weight polyethylene production
作者:Vladislav A. Tuskaev、Svetlana Ch Gagieva、Dmitrii A. Kurmaev、Victor N. Khrustalev、Pavel V. Dorovatovskii、Elena S. Mikhaylik、Evgenii K. Golubev、Mikhail I. Buzin、Sergey V. Zubkevich、Galina G. Nikiforova、Viktor G. Vasil'ev、Boris M. Bulychev、Kasim F. Magomedov
DOI:10.1016/j.jorganchem.2018.09.014
日期:2018.12
A series of titanium (IV) complexes 3a-f stabilized by 1,2-diolate ligands 2 a-e have been synthesized. Structures of complexes 3d and 3e have been determined by X-ray diffraction. Titanium atoms in these complexes have a distorted square-pyramidal environment. All resulting complexes are highly active in ethylene polymerization in the presence of 3Et2AlCl + MgBu2} or 1.5Et3Al2Cl3 + MgBu2} binary
一系列钛(IV)配合物3A-F由1,2-苯二酚根合配位体稳定化的2个AE已被合成。配合物3d和3e的结构已经通过X射线衍射确定。这些络合物中的钛原子具有扭曲的方锥环境。在3Et 2 AlCl + MgBu 2 }或1.5Et 3 Al 2 Cl 3 + MgBu 2 }二元助催化剂的存在下,所有得到的络合物在乙烯聚合中均具有高活性。在后一种情况下,UHMWPE样品的分子量较高(高达7.7 10 6)达成。所获得的聚合物适用于现代加工方法–超高强度(超过2.0 – 2.8 GPa)和高模量(高达145 GPa)取向的薄膜带的无溶剂固态形成。