5-Methoxy-substituted zirconium bis-indenyl ansa -complexes: Synthesis, structure, and catalytic activity in the polymerization and copolymerization of alkenes
Тип публикации: Journal Article
Дата публикации: 2012-07-12
scimago Q2
wos Q1
БС1
SJR: 0.676
CiteScore: 5.1
Impact factor: 2.9
ISSN: 02767333, 15206041
Organic Chemistry
Inorganic Chemistry
Physical and Theoretical Chemistry
Краткое описание
A number of 2-methyl-4-aryl-5-methoxy-6-alkylindenes and C2-symmetric Me2Si-bridged ansa-zirconocenes based on them were synthesized. Zirconocenes were obtained by means of highly effective and scalable racemo-selective synthetic approach based on the use of a Zr tert-butyl amide complex. The structure of μ-(bis-[η5-6-tert-butyl-5-methoxy-2-methyl-4-tert-butylphenyl-1H-inden-1-yl]dimethylsilanediyl)dichlorozirconium(IV) (14) has been established with X-ray analysis. The introduction of a methoxy group into the indenyl fragment of zirconocene significantly improved its catalytic performance (i.e., its activity, stereoselectivity, molecular mass potential, and thermal stability) in the polymerization and copolymerization of propylene in comparison with the benchmark Spaleck-zirconocene. The role of the methoxy group is proposed to stabilize the cationic catalytic intermediates, which was confirmed using DFT calculations.
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Nifant'ev I. E. et al. 5-Methoxy-substituted zirconium bis-indenyl ansa -complexes: Synthesis, structure, and catalytic activity in the polymerization and copolymerization of alkenes // Organometallics. 2012. Vol. 31. No. 14. pp. 4962-4970.
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Nifant'ev I. E., Ivchenko P. V., Bagrov V. V., Churakov A. V., Mercandelli P., Mercandelli P. 5-Methoxy-substituted zirconium bis-indenyl ansa -complexes: Synthesis, structure, and catalytic activity in the polymerization and copolymerization of alkenes // Organometallics. 2012. Vol. 31. No. 14. pp. 4962-4970.
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TY - JOUR
DO - 10.1021/om300160v
UR - https://pubs.acs.org/doi/10.1021/om300160v
TI - 5-Methoxy-substituted zirconium bis-indenyl ansa -complexes: Synthesis, structure, and catalytic activity in the polymerization and copolymerization of alkenes
T2 - Organometallics
AU - Nifant'ev, Ilya E.
AU - Ivchenko, Pavel V
AU - Bagrov, Vladimir V
AU - Churakov, Andrei V.
AU - Mercandelli, P.
AU - Mercandelli, Pierluigi
PY - 2012
DA - 2012/07/12
PB - American Chemical Society (ACS)
SP - 4962-4970
IS - 14
VL - 31
SN - 0276-7333
SN - 1520-6041
ER -
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@article{2012_Nifant'ev,
author = {Ilya E. Nifant'ev and Pavel V Ivchenko and Vladimir V Bagrov and Andrei V. Churakov and P. Mercandelli and Pierluigi Mercandelli},
title = {5-Methoxy-substituted zirconium bis-indenyl ansa -complexes: Synthesis, structure, and catalytic activity in the polymerization and copolymerization of alkenes},
journal = {Organometallics},
year = {2012},
volume = {31},
publisher = {American Chemical Society (ACS)},
month = {jul},
url = {https://pubs.acs.org/doi/10.1021/om300160v},
number = {14},
pages = {4962--4970},
doi = {10.1021/om300160v}
}
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MLA
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Nifant'ev, Ilya E., et al. “5-Methoxy-substituted zirconium bis-indenyl ansa -complexes: Synthesis, structure, and catalytic activity in the polymerization and copolymerization of alkenes.” Organometallics, vol. 31, no. 14, Jul. 2012, pp. 4962-4970. https://pubs.acs.org/doi/10.1021/om300160v.
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