Use of catalysts for olefin homo- and copolymerization has received growing attention in recent decades. Most polyolefins especially polyethylene and polypropylene are currently produced in the presence of transition-metal catalysts. So far, late transition-metal catalysts particularly nickel and palladium-based complexes have attracted great attention and various ligands have been employed in the structure of these catalysts. In this contribution, nickel and palladium-based complexes with symmetrical cationic α-diimine (as Brookhart catalysts) and non-symmetrical neutral phosphine-sulfonate ligands (as Drent catalysts) have been extensively utilized as olefin (co)polymerization catalysts. Unlike classic α-diimine complexes, the generation of highly linear ethylene/polar monomer copolymers, prepared in the absence of co-catalyst by phosphine-sulfonate palladium/nickel catalysts poses an interesting case. The outstanding features of phosphine-sulfonate-based catalysts motivated many researchers to focus on these catalysts. In this context, several review articles have covered various aspects of this class of catalysts. Considering the importance of phosphine-sulfonate-based catalysts, in this mini-review, we wish to address recent advances of the neutral, single component palladium/nickel complexes bearing phosphine–sulfonate ligands for olefin (co)polymerization with polar monomers.

近几十年来，烯烃均聚和共聚催化剂的使用受到越来越多的关注。大多数聚烯烃，尤其是聚乙烯和聚丙烯目前在过渡金属催化剂存在下生产。迄今为止，后过渡金属催化剂，特别是镍和钯基配合物引起了极大的关注，并且在这些催化剂的结构中使用了各种配体。在这项贡献中，具有对称阳离子 α-二亚胺（作为 Brookhart 催化剂）和非对称中性膦-磺酸盐配体（作为 Drent 催化剂）的镍和钯基配合物已被广泛用作烯烃（共）聚合催化剂。与经典的 α-二亚胺配合物不同，产生高度线性的乙烯/极性单体由膦-磺酸盐钯/镍催化剂在不存在助催化剂的情况下制备的共聚物是一个有趣的例子。基于膦磺酸盐的催化剂的突出特点促使许多研究人员将注意力集中在这些催化剂上。在这种情况下，几篇评论文章涵盖了这类催化剂的各个方面。考虑到膦-磺酸盐基催化剂的重要性，在这篇小型综述中，我们希望讨论带有膦-磺酸盐配体的中性单组分钯/镍配合物用于烯烃与极性单体（共）聚合的最新进展。