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- W1972594417 abstract "A series of five one-component catalysts has been investigated: (η3-C8H13)Ni(CH3COCHCOCH3) (1a), (η3-C8H13)Ni(CF3COCHCOCH3) (1b), (η3-C8H13)Ni(CF3COCHCOCF3) (1c), (PPh3)C6H5Ni(PPh2CHCOPh) (2) and (η3-C8H13)Ni(PPh2CH2COO) (3). Their catalytic activity and selectivity in the oligomerization of small alkenes are discussed: 1 catalyzes the dimerization of but-1-ene to 80% linear octenes (turnover number at 75 °C for 1c: 0.2 s−1); 2 and 3 oligomerize ethylene to 99% linear α-olefins in the C4 - C20 range (turnover number at 75 °C for 3: 0.8 s−1). Compound 3 is a model for the catalyst system employed in the SHELL-Higher-Olefins-Process. K-edge XAS and ESCA spectra of 1–3 show square-planar d8-configuration in all cases and allow an inverse volcano-type correlation between ESCA chemical shifts and catalytic activity and selectivity. A mechanistic explanation with regard to the insertion step and the chain growth terminating β-H elimination reaction is undertaken." @default.
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- W1972594417 date "1983-08-01" @default.
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- W1972594417 title "ESCA and K-EDGE x-ray absorption spectroscopy applied to nickel one-component catalysts: a correlation between spectral data and the kinetics of linear olefin oligomerization" @default.
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- W1972594417 doi "https://doi.org/10.1016/0304-5102(83)83001-6" @default.
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