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Volumn 120, Issue 9, 1998, Pages 2039-2046

Strategies for synthesis of elastomeric polypropylene: Fluxional metallocenes with C1-symmetry

Author keywords

[No Author keywords available]

Indexed keywords

BIS(2 PHENYLINDENYL)ZIRCONIUM DICHLORIDE; ELASTOMER; LITHIUM INDENIDE; METHYLALUMINOXANE; ORGANOLITHIUM COMPOUND; POLYPROPYLENE; UNCLASSIFIED DRUG; ZIRCONIUM DERIVATIVE;

EID: 0032507247     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja973414+     Document Type: Article
Times cited : (85)

References (44)
  • 3
    • 2642620114 scopus 로고    scopus 로고
    • (Rexall) U.S. Patent 3,329, 741, 1967
    • Schrage, A. (Rexall) U.S. Patent 3,329, 741, 1967.
    • Schrage, A.1
  • 4
    • 2642680720 scopus 로고    scopus 로고
    • (3M) U.S. Patent 3,784, 502, 1974
    • Gobran, R. (3M) U.S. Patent 3,784, 502, 1974.
    • Gobran, R.1
  • 5
    • 2642638662 scopus 로고    scopus 로고
    • Kontos (US Rubber) U.S. Patent 3,853, 969, 1974
    • Kontos (US Rubber) U.S. Patent 3,853, 969, 1974.
  • 16
  • 20
    • 2642710817 scopus 로고    scopus 로고
    • (Stanford University) U.S. Patent 5,594, 080, 1997
    • Waymouth, R. M.; Coates, G., W.; Hauptman, E. (Stanford University) U.S. Patent 5,594, 080, 1997.
    • Waymouth, R.M.1    Coates, G.W.2    Hauptman, E.3
  • 27
    • 2642679150 scopus 로고    scopus 로고
    • note
    • Primary, secondary, and tertiary carbon atoms were assigned based on APT experiments.
  • 36
    • 2642671886 scopus 로고    scopus 로고
    • note
    • The geometry of the low energy rotamers depicted in Figure 5 is supported by the ligand orientation in the crystal structures of 8 and 9 and by computer modeling results obtained for 8/MAO by Eric Moore at Amoco.
  • 38
    • 0025844551 scopus 로고
    • Corradini and co-workers suggest that the enantioselectivity of a propene insertion is determined by the orientation of the first C-C bond of the growing polymer chain which is imposed onto it by the ligand environment, see: Corradini, P.; Guerra, G. Prog. Polym. Sci. 1991, 16, 239-257. According to Corradini, the assignments of the site stereospecificity in both rotamers of 8 and 10 and one of the rotamers of 9 should be interchanged, but it does not change the overall specificity of the rotamer.
    • (1991) Prog. Polym. Sci. , vol.16 , pp. 239-257
    • Corradini, P.1    Guerra, G.2
  • 42
    • 2642674325 scopus 로고    scopus 로고
    • note
    • Both in 1/MAO and 8/MAO the bulky methyl substituents on the cyclopentadienyl ligand are in close proximity to the catalyst active sites. In the case of unsubstituted Cp-ligand (2-6/MAO) the active center environment is more open.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.