%0 Journal Article %T Synthesis of L2Ni(ORF)2 (RF=C(CF3)3) Complexes and their Reactivity in Ethylene Oligomerization %+ Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA) %+ IFP Energies nouvelles (IFPEN) %+ Institut de Chimie de Toulouse (ICT) %A Petit, Julien %A Saffon-Merceron, Nathalie %A Magna, Lionel %A Mézailles, Nicolas %< avec comité de lecture %@ 0276-7333 %J Organometallics %I American Chemical Society %V 40 %N 24 %P 4133-4142 %8 2021-12-27 %D 2021 %R 10.1021/acs.organomet.1c00575 %K Hydrocarbons %K Ligands %K Precursors %K Mathematical methods %K Selectivity %Z Chemical Sciences %Z Chemical Sciences/Catalysis %Z Environmental SciencesJournal articles %X A family of L2Ni(ORF)2 (L2: (Cy3PO)24, dcpmS 5, dppf 9, bipyMe210; RF = C(CF3)3) complexes is synthesized via selective substitution of 2 equiv of (DME)NaORF from homoleptic [Ni(ORF)4][Na(DME)]2 complex 1, all characterized by 19F and 1H NMR and SCXRD analyses as well as elemental analyses. These L2Ni(ORF)2 precursors, activated by 2 equiv of PhF → Al(ORF)3, were active in ethylene oligomerization with selectivity toward butenes up to 97% and activities ranging from 10 to 50 kgC2H4·gNi·h–1. Mechanistic investigations, involving experiments with C2H4/C2D4 (1/1) coupled with GC-MS analysis, revealed the formation of a Ni–H fragment in the catalytic process. The L2Ni(ORF)2/2PhF → Al(ORF)3 catalytic system thus dimerizes ethylene through a Cossee–Arlman mechanism. %G English %2 https://ifp.hal.science/hal-03586423/document %2 https://ifp.hal.science/hal-03586423/file/Synthesis%20of%20L2Ni%20ORF%202%20%20RF%20%20C%20CF%203%203%20Complexes%20and%20Their%20Reactivity%20in%20Ethylene%20Oligomerization.pdf %L hal-03586423 %U https://ifp.hal.science/hal-03586423 %~ IRD %~ SDE %~ UNIV-TLSE3 %~ IFP %~ CNRS %~ GIP-BE %~ INC-CNRS %~ TOULOUSE-INP %~ UNIV-UT3 %~ UT3-INP %~ UT3-TOULOUSEINP %~ LHFA