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Volumn 122, Issue 38, 2000, Pages 9265-9270

A density functional molecular orbital study of the C2-C7 and C2-C6 cyclization pathways of 1,2,4-heptatrien-6-ynes. The role of benzannulation

Author keywords

[No Author keywords available]

Indexed keywords

1,2,4 HEPTATRIEN 6 YNES; ALLENE DERIVATIVE; BENZENE; BIS DEHYDROMETHYLFULVENE; CARBON; FULVIC ACID; NAPHTHALENE; RADICAL; UNCLASSIFIED DRUG;

EID: 0034721468     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja002050+     Document Type: Article
Times cited : (48)

References (57)
  • 41
    • 0343602048 scopus 로고    scopus 로고
    • note
    • 1 biradical reported by Schreiner and Prall indicating that symmetry breaking does not occur in this case. We did obtain their results by using the GUESS=MIX command.
  • 42
    • 1542474067 scopus 로고    scopus 로고
    • Density Functional Calculations of Radicals and Diradicals
    • Laird, B. B., Ross, R. B., Ziegler, T., Eds.; American Chemical Society: Washington, DC
    • Lim, M. H.; Worthington, S. E.; Dulles, F. J.; Cramer, C. J. Density Functional Calculations of Radicals and Diradicals. In Density-Functional Methods in Chemistry; Laird, B. B., Ross, R. B., Ziegler, T., Eds.; American Chemical Society: Washington, DC, 1996; p 402.
    • (1996) Density-Functional Methods in Chemistry , pp. 402
    • Lim, M.H.1    Worthington, S.E.2    Dulles, F.J.3    Cramer, C.J.4
  • 44
    • 0003363438 scopus 로고    scopus 로고
    • Neutral Thermochemical Data
    • Mallard, W. G., Linstrom, P. J., Eds.: National Institute of Standards and Technology: Gaithersburg, MD, 20899
    • Afeefy, H. Y.; Liebman, J. F.; Stein, S. E. Neutral Thermochemical Data. In NIST Chemistry WebBook, NIST Standard Reference Database No. 69; Mallard, W. G., Linstrom, P. J., Eds.: National Institute of Standards and Technology: Gaithersburg, MD, 20899, 1999 (http://webbook.nist.gov).
    • (1999) NIST Chemistry WebBook, NIST Standard Reference Database No. 69 , vol.69
    • Afeefy, H.Y.1    Liebman, J.F.2    Stein, S.E.3
  • 54
    • 0343166572 scopus 로고    scopus 로고
    • note
    • 2]/2, to account for the contribution of the triplet state to the energy. If we apply this approximation to the systems described here, then the energy difference between 5ts and 12ts is 5.7 kcal/mol and the difference between 14ts and 15ts is 2.0 kcal/ mol, such that benzannulation stabilizes the transition state by 3.7 kcal/ mol.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.