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Volumn 26, Issue 4, 2007, Pages 1000-1013

Role of MAO in chromium-catalyzed ethylene tri- and tetramerization: A DFT study

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVATION ANALYSIS; CATALYSIS; CHROMIUM; COMPLEXATION; ETHYLENE; MOLECULAR STRUCTURE;

EID: 33847324462     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om060890c     Document Type: Article
Times cited : (84)

References (117)
  • 13
    • 14544275247 scopus 로고    scopus 로고
    • For a comprehensive review on ethylene trimerization see
    • For a comprehensive review on ethylene trimerization see: Dixon, J. T.; Green, M. J.; Hess, F. M.; Morgan, D. H. J. Organomet. Chem. 2004, 689, 3641.
    • (2004) J. Organomet. Chem , vol.689 , pp. 3641
    • Dixon, J.T.1    Green, M.J.2    Hess, F.M.3    Morgan, D.H.4
  • 82
    • 33847283780 scopus 로고    scopus 로고
    • Delley, B In Modern Density Functional Theory: A Tool for Chemistry; Seminario, J. M., Politzer, P., Eds.; Theoretical and Computational Chemistry, 2; Elsevier: Amsterdam, The Netherlands, 1995.
    • Delley, B In Modern Density Functional Theory: A Tool for Chemistry; Seminario, J. M., Politzer, P., Eds.; Theoretical and Computational Chemistry, Vol. 2; Elsevier: Amsterdam, The Netherlands, 1995.
  • 108
    • 33847300788 scopus 로고    scopus 로고
    • See Supporting Information for an analysis and validation of DFT-calculated spin state splittings for chromium complexes
    • See Supporting Information for an analysis and validation of DFT-calculated spin state splittings for chromium complexes.
  • 112
    • 33847334092 scopus 로고    scopus 로고
    • As pointed out by a referee, it could be argued that the size of the MAO model may not necessarily be the driving force for dissociated ion-pair formation, but rather the nature of the ligand. However, calculations performed on interaction of chromacycloheptane complexes containing the full Ph2PN(iPr)PPh2 ligand and the small TMA-expanded MAO model, AlOMe)6-TMA, showed that spontaneous ion-pair formation does not occur, even in the presence of an additional coordinating ethylene unit. Alternatively, calculation of complexes containing the stripped-down ligand, Me2PN(Me)PMe2, and-the larger TMA-expanded MAO, AlOMe)9-TMA-sh, also resulted in no spontaneous dissociated ion-pair formation, in both the absence and presence of coordinated ethylene. Full details of these results are presented in the Supporting Information
    • 9-TMA-sh, also resulted in no spontaneous dissociated ion-pair formation, in both the absence and presence of coordinated ethylene. Full details of these results are presented in the Supporting Information.
  • 113
    • 33847257631 scopus 로고    scopus 로고
    • 16
    • 16


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.