Provided are a metal-ligand complex having both a strong electron donor group and an electron withdrawing group by introducing a specific functional group, difluoromethylene group, into an oxygen-oxygen bridge, a catalyst composition for ethylene-based polymerization containing the same, and a preparation method of an ethylene-based polymer using the same. The metal-ligand complex according to the present invention and the catalyst composition containing the same may be very usefully used in the preparation of an ethylene-based polymer having excellent physical properties.
本发明提供了一种
金属
配体复合物,通过引入特定的二
氟甲基基团到氧氧桥中,使其具有强电子给体基团和电子提取基团,还提供了一种含有该复合物的
乙烯基聚合物催化剂组合物以及使用该催化剂组合物制备
乙烯基聚合物的方法。本发明的
金属
配体复合物和含有该复合物的催化剂组合物可非常有用地用于制备具有优异物理性能的
乙烯基聚合物。