. These molecules rearrange in the presence of nickel by metal-induced breakage of the P-P bond to yield symmetrical and nonsymmetrical diphosphinoamine nickel complexes of general formula Ni[P(R-2)(2)]N(SO2R1)P(R-3)(2)}Br-2. The complexes can be isolated and are very stable. Upon activation by MAO, these complexes oligomerise ethylene to small chain oligomers (mainly C-4-C-8) with high productivity
我们描述了一系列基于磺酰
氨基部分的新型亚
氨基双
膦配体的合成 [(R1SON)-N-2=P(R-2)(2)-P(R-3)(2)]。这些分子在
镍存在下通过
金属诱导的 PP 键断裂重新排列,产生对称和非对称
二膦胺
镍配合物,通式为 Ni[P(R-2)(2)]N(SO2R1)P(R-3) )(2)}Br-2。复合物可以分离并且非常稳定。在被 MAO 活化后,这些配合物将
乙烯低聚成小链低聚物(主要是 C-4-C-8),并具有高生产率。观察到
乙烯与
丁烯的快速共二聚反应令人惊讶,导致支链 C-6 产物的含量高。