Nickel-Catalyzed Ethylene Dimerization Based on PNP(NR2)2 Ligands
نویسندگان
چکیده
Nickel (II) complexes stabilized by PNP(NR2)2 (L1: R = Methyl, L2: ethyl, L3: isopropyl) ligands were synthesized and characterized. A narrow range of products was observed for catalytic systems containing nickel ethyl aluminum dichloride (EADC). All exhibit considerable activity in the ethylene dimerization to produce 1-butene. Precatalyst 1 is most conducive dimerization, producing 83.4% C4 (1-C4 36.8%) 103.0 × 105 g/(molNi·h) terms its under appropriate conditions. By adjusting conditions system precatalyst 2, high selectivity (88.1%) with reasonable (76.9 g/(molNi·h)) can be obtained. The X-ray single-crystal analysis presents mononuclear bidentate coordination at Ni center, relationship between certain bite angles may also imply performance.
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ژورنال
عنوان ژورنال: Catalysts
سال: 2022
ISSN: ['2073-4344']
DOI: https://doi.org/10.3390/catal12091008