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Iron bis(arylimino)pyridine precursors activated to catalyze ethylene oligomerization as studied by DFT and QSAR approaches
被引:16
作者:
Fayet, Guillaume
[1
]
Raybaud, Pascal
[2
]
Toulhoat, Herve
[3
]
de Bruin, Theodorus
[1
]
机构:
[1] IFP, Direct Chim & Physicochim Appl, F-92852 Rueil Malmaison, France
[2] IFP Energies Nouvelles, Direct Catalyse & Separat, F-69360 Solaize, France
[3] IFP, Direct Sci, F-92852 Rueil Malmaison, France
来源:
JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM
|
2009年
/
903卷
/
1-3期
关键词:
DFT;
Iron bis(arylimino)pyridine;
Molecular catalysis;
Ethylene oligomerization;
QSAR;
COUPLED-CLUSTER SINGLES;
CORRELATION-ENERGY;
2,6-BIS(IMINO)PYRIDYL IRON;
OLEFIN POLYMERIZATION;
COBALT CATALYSTS;
SPIN STATES;
AB-INITIO;
DENSITY;
APPROXIMATION;
POTENTIALS;
D O I:
10.1016/j.theochem.2008.10.048
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
We report here the comparison of several GGA and hybrid-type functionals in combination with different basis sets to describe the precursor catalysts of the iron bis(arylimino)pyridine family that can be activated with methylaluminoxane to oligomerize or polymerize ethylene. From our calculations, it follows that hybrid functionals like B3LYP better take into account magnetic (spin) properties as compared to BP86 or BLYP. In addition, a quantitative structure activity relationship (QSAR) has been built comprising in total 10 different precursors. From this correlation it follows that the position of the aryl groups in the bis(arylimino)pyridyl complexes plays an important role with respect to the activity of the catalysts. (C) 2009 Elsevier B.V. All rights reserved.
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页码:100 / 107
页数:8
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