메뉴 건너뛰기




Volumn 16, Issue 16, 1997, Pages 3635-3639

Propylene polymerization with chiral and achiral unbridged 2-arylindene metallocenes

Author keywords

[No Author keywords available]

Indexed keywords

CATALYSTS; CRYSTALLIZATION; LITHIUM COMPOUNDS; MOLECULAR WEIGHT; POLYMERIZATION; POLYPROPYLENES; SUBSTITUTION REACTIONS; SYNTHESIS (CHEMICAL); X RAY CRYSTALLOGRAPHY;

EID: 0031554685     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om9702082     Document Type: Article
Times cited : (74)

References (40)
  • 3
    • 85033182283 scopus 로고    scopus 로고
    • (Shell Oil Co.) U.S. Patent 5,118,649, 1992
    • Job, R. C. (Shell Oil Co.) U.S. Patent 5,118,649, 1992.
    • Job, R.C.1
  • 4
    • 85033173570 scopus 로고    scopus 로고
    • (Rexene) Eur. Pat. Appl. 0 475 307 A1, 1992
    • Pellon, B. J.; Allen, G. C. (Rexene) Eur. Pat. Appl. 0 475 307 A1, 1992.
    • Pellon, B.J.1    Allen, G.C.2
  • 5
    • 85033180840 scopus 로고    scopus 로고
    • (Himont) Eur. Pat. Appl. 423 786 A2, 1991
    • Smith, C. A. (Himont) Eur. Pat. Appl. 423 786 A2, 1991.
    • Smith, C.A.1
  • 15
  • 16
    • 85033183957 scopus 로고    scopus 로고
    • Ph.D. Thesis, Stanford University, Stanford, CA, 1994
    • Coates, G. W. Ph.D. Thesis, Stanford University, Stanford, CA, 1994.
    • Coates, G.W.1
  • 18
    • 85033186677 scopus 로고    scopus 로고
    • note
    • Primary, secondary, and tertiary carbon atoms were assigned based on APT experiments.
  • 26
  • 28
    • 85033189706 scopus 로고    scopus 로고
    • note
    • 3 groups and the two Cp protons can be interconverted through symmetry operations, and thus, if the complexes are completely frozen in these conformations, the groups under consideration will be equivalent by NMR. However, closely related 2-arylindene metallocene dihalides are known to undergo rapid ligand rotation at room temperature.
  • 32
    • 85033164871 scopus 로고
    • Woodward, A. E., Bovey, F. A., Eds.; American Chemical Society: Washington, DC
    • Randall, J. C. In Polymer Charactarization by ESR and NMR; Woodward, A. E., Bovey, F. A., Eds.; American Chemical Society: Washington, DC, 1980; p 142.
    • (1980) Polymer Charactarization by ESR and NMR , pp. 142
    • Randall, J.C.1
  • 34
  • 35
    • 85033185787 scopus 로고    scopus 로고
    • note
    • Propylene polymerizations under each set of conditions were conducted at least twice, and in all cases mmmm contents were found to be reproducible.
  • 39
    • 85033165935 scopus 로고    scopus 로고
    • note
    • We assume that ligand rotation in the actual active species 3-rac/MAO and 3-meso/MAO is slower than that of the corresponding dichlorides (see ref 28) due to the interactions with the growing polymer chain and MAO anion.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.