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Volumn 46, Issue 11, 2007, Pages 1909-1913

Cationic alkyl rare-earth metal complexes bearing an ancillary bis(phosphinophenyl)amido ligand: A catalytic system for living cis-1,4-polymerization and copolymerization of isoprene and butadiene

Author keywords

Alkyl ligands; Block copolymers; Lanthanides; P ligands; Polymerization

Indexed keywords

BUTADIENE; COMPLEXATION; LIGANDS; POLYMERIZATION; X RAY CRYSTALLOGRAPHY;

EID: 34250839384     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200604348     Document Type: Article
Times cited : (263)

References (63)
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    • For cis-1,4 polymerization of butadiene by related allylneodymium chloride catalysts, see: a S. Maiwald, H. Weissenborn, H. Windisch, C. Sommer, G. Müller, R. Taube, Macromol. Chem. Phys. 1997, 198, 3305-3315;
    • For cis-1,4 polymerization of butadiene by related allylneodymium chloride catalysts, see: a) S. Maiwald, H. Weissenborn, H. Windisch, C. Sommer, G. Müller, R. Taube, Macromol. Chem. Phys. 1997, 198, 3305-3315;
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    • An alkyl lithium compound alone can initiate anionic polymerization of butadiene and isoprene, but the cis-1,4 selectivity is usually poor. For examples, see: A. F. Halasa, D. N. Schulz, D. P. Tate, V. D. Mochel, Adv. Organomet. Chem. 1980, 18, 55-97. See also ref, 2c
    • An alkyl lithium compound alone can initiate anionic polymerization of butadiene and isoprene, but the cis-1,4 selectivity is usually poor. For examples, see: A. F. Halasa, D. N. Schulz, D. P. Tate, V. D. Mochel, Adv. Organomet. Chem. 1980, 18, 55-97. See also ref. [2c].
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    • 2 (Ln = Sm, Tm, Dy) has been reported to show activity for the cis-1,4 polymerization of isoprene, but complete details, including the regioselectivity (1,4- vs. 3,4-), were not given. See: W. J. Evans, D. G. Giarikos, N. T. Allen, Macromolecules 2003, 36, 4256-4257.
    • 2 (Ln = Sm, Tm, Dy) has been reported to show activity for the cis-1,4 polymerization of isoprene, but complete details, including the regioselectivity (1,4- vs. 3,4-), were not given. See: W. J. Evans, D. G. Giarikos, N. T. Allen, Macromolecules 2003, 36, 4256-4257.
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    • For examples of PNP-ligated transition-metal complexes, see: a L. Liang, J. Lin, C. Hung, Organometallics 2003, 22, 3007-3009;
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    • For examples of PNP-ligated rare-earth-metal complexes, see: a) M. D. Fryzuk, T. S. Haddad, S. J. Rettig, Organometallics 1991, 10, 2026-2036;
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    • CCDC-616257 (3) and CCDC-616258 (6) contain the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data_request/cif.
    • CCDC-616257 (3) and CCDC-616258 (6) contain the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data_request/cif.
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    • 4], were added.
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    • 3-π-butenyl species, which has been observed in other catalyst systems, does not occur here. For a theoretical study of Ni-catalyzed butadiene polymerization, see: S. Tobisch
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.