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• W2103807574 abstract "The N,P,N-type ligands bis(2-picolyl)phenylphosphine (1), bis(4,5-dihydro-2-oxazolylmethyl)phenylphosphine (2), bis(4,4-dimethyl-2-oxazolylmethyl)phenylphosphine (3) and bis(2-picolyloxy)phenylphosphine (4) were used to synthesize the corresponding pentacoordinated Ni(II) complexes [Ni{bis(2-picolyl)phenylphosphine}Cl2] (6), [Ni{bis(4,5-dihydro-2-oxazolylmethyl)phenylphosphine}Cl2] (7), [Ni{bis(4,4-dimethyl-2-oxazolylmethyl)phenylphosphine}Cl2] (8) and [Ni{bis(2-picolyloxy)phenylphosphine}Cl2] (9), respectively. The hexacoordinated iron complexes [Fe{bis(2-picolyl)phenylphosphine}2][Cl3FeOFeCl3] (10), [Fe{bis(4,5-dihydro-2-oxazolylmethyl)phenylphosphine}2][Cl3FeOFeCl3] (11) and the tetracoordinated complex [Fe{bis(4,4-dimethyl-2-oxazolylmethyl)phenylphosphine}Cl2] (abbreviated [FeCl2(NPNMe2-N,N)]) were prepared by reaction of FeCl2·4H2O with ligands 1–3, respectively. The crystal structures of the octahedral complexes 10 and 11, determined by X-ray diffraction, showed that two tridentate ligands are facially coordinated to the metal centre with a cis-arrangement of the P atoms and the dianion (μ-oxo)bis[trichloroferrate(III)] compensates the doubly positive charge of the complex. The cyclic voltammograms of 10 and 11 showed two reversible redox couples attributed to the reduction of the dianion (Fe2OCl6)2− (−0.24 V for 10 and −0.20 V for 11vs.SCE) and to the oxidation of the Fe(II) ion of the complex (0.67 V for 10 and 0.52 V for 11vs.SCE). The cyclic voltammogram of [FeCl2(NPNMe2-N,N)] showed a reversible redox couple at −0.17 V vs.SCE assigned to the oxidation of the Fe(II) atom and an irreversible process at 0.65 V. The complexes 6, 8–11 and [FeCl2(NPNMe2-N,N)] have been evaluated in the catalytic oligomerization of ethylene with AlEtCl2 or MAO as cocatalyst. The nickel complex 6 proved to be the most active precatalyst in the series, with a turnover frequency (TOF) of 61 800 molC2H4 molNi−1 h−1 with 10 equiv. of AlEtCl2 and 12 200 molC2H4 molNi−1 h−1 with 200 equiv. of MAO. Precatalysts 8 and 9 were the most selective in butenes, up to 90% with 6 equiv. of AlEtCl2 and 89% with 2 equiv. of AlEtCl2, respectively, and up to 92% butenes with 400 equiv. of MAO and 91% butenes with 200 equiv. MAO, respectively. The best selectivities for 1-butene were provided by 8 and AlEtCl2 (up to 31% with 6 equiv.) and 9 with MAO (up to 72% with 200 equiv.). The iron complexes were not significantly active with AlEtCl2 or MAO as cocatalyst." @default.
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• W2103807574 date "2008-01-01" @default.
• W2103807574 modified "2023-10-14" @default.
• W2103807574 title "Nickel and iron complexes with N,P,N-type ligands: synthesis, structure and catalytic oligomerization of ethylene" @default.
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• W2103807574 cites W1969481851 @default.
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• W2103807574 cites W1973561203 @default.
• W2103807574 cites W1973814487 @default.
• W2103807574 cites W1979058448 @default.
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• W2103807574 cites W1983724732 @default.
• W2103807574 cites W1984076508 @default.
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• W2103807574 cites W1993082047 @default.
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• W2103807574 cites W1996843768 @default.
• W2103807574 cites W2001678787 @default.
• W2103807574 cites W2002788226 @default.
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• W2103807574 cites W2028397110 @default.
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• W2103807574 cites W2029830705 @default.
• W2103807574 cites W2031736740 @default.
• W2103807574 cites W2040547651 @default.
• W2103807574 cites W2042024356 @default.
• W2103807574 cites W2048260303 @default.
• W2103807574 cites W2053610535 @default.
• W2103807574 cites W2054055021 @default.
• W2103807574 cites W2058920537 @default.
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• W2103807574 cites W2068100520 @default.
• W2103807574 cites W2069083176 @default.
• W2103807574 cites W2073881108 @default.
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• W2103807574 doi "https://doi.org/10.1039/b802009d" @default.
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