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Volumn 17, Issue 5, 1998, Pages 933-946

A unified view of ethylene polymerization by d0 and d0fn transition metals. 1. Precursor compounds and olefin uptake energetics

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EID: 0001395106     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om9707578     Document Type: Article
Times cited : (147)

References (73)
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    • note
    • 48) based on the same density functional approach. They are not repeated here but simply referred to as literature data. Geometries pertaining to these calculations are also not included in the Supporting Information.
  • 35
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    • te Riele, H. J. J., Dekker, T. J., van de Horst, H. A., Eds.; Elsevier: Amsterdam, The Netherlands
    • Ravenek, W. In Algorithms and Applications on Vector and Parallel Computers; te Riele, H. J. J., Dekker, T. J., van de Horst, H. A., Eds.; Elsevier: Amsterdam, The Netherlands, 1987.
    • (1987) Algorithms and Applications on Vector and Parallel Computers
    • Ravenek, W.1
  • 41
    • 0003990093 scopus 로고
    • Internal Report (in Dutch); Department of Theoretical Chemistry, Free University, Amsterdam, The Netherlands
    • Krijn, J.; Baerends, E. J. Fit Functions in the HFS Method; Internal Report (in Dutch); Department of Theoretical Chemistry, Free University, Amsterdam, The Netherlands, 1984.
    • (1984) Fit Functions in the HFS Method
    • Krijn, J.1    Baerends, E.J.2
  • 54
    • 11644256777 scopus 로고    scopus 로고
    • note
    • To preclude any α-agostic bonding, the angles between metal, methyl carbon, and methyl hydrogens were constrained to 109.45°.
  • 59
    • 85088080144 scopus 로고    scopus 로고
    • note
    • 2v symmetry) and therefore give rise to exo-endo isomerism with regard to the attached alkyl chain. If the alkyl chain terminus points toward the concave side of the ligand, it will be termed endo. If it points toward the convex side of the ligand, it will be termed exo.
  • 60
    • 11644296914 scopus 로고    scopus 로고
    • note
    • These calculations were performed with the same set of constraints as was applied for the analogous methyl system. However, the movement of the β-carbon atom is restricted to the plane normal to the auxiliary ligand plane.
  • 62
    • 0000123549 scopus 로고
    • Salahub, D., Ed.; Kluwer: Dordrecht, The Netherlands
    • Ziegler, T. In NATO ASI Series C; Salahub, D., Ed.; Kluwer: Dordrecht, The Netherlands, 1992; Vol. 378; p 367.
    • (1992) NATO ASI Series C , vol.378 , pp. 367
    • Ziegler, T.1
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    • note
    • 68
  • 66
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    • note
    • +, for which the deformation energy is misleadingly large since there is no agostic bond present in the precursor but one is formed upon FS olefin complexation. Thus, the large deformation incurred on complexation overcompensates the contribution from tetrahedral-trigonal isomerism.
  • 67
    • 11644281788 scopus 로고    scopus 로고
    • note
    • 67d,e At the present level of computational technology it is not practicable to give detailed estimates of the TΔS contribution to ethylene binding based on ab initio calculations for such a large sample as ours. Therefore, we will assume that previously measured or calculated TAS contributions are transferable,


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