메뉴 건너뛰기




Volumn 102, Issue 46, 1998, Pages 9297-9307

The C4H6̇+ potential energy surface. 2. The reaction of ethylene radical cation with acetylene

Author keywords

[No Author keywords available]

Indexed keywords


EID: 0001028351     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp982590h     Document Type: Article
Times cited : (29)

References (55)
  • 1
    • 0001643026 scopus 로고
    • Bowers, M. T., Ed.; Academic: New York
    • Baer, T. In Gas-Phase Ion Chemistry; Bowers, M. T., Ed.; Academic: New York, 1979; Vol. 1, p 153.
    • (1979) Gas-Phase Ion Chemistry , vol.1 , pp. 153
    • Baer, T.1
  • 2
    • 11744310414 scopus 로고    scopus 로고
    • Unpublished results
    • Herman, Z. Unpublished results.
    • Herman, Z.1
  • 16
    • 0033449808 scopus 로고    scopus 로고
    • Lipkowitz, K. B., Boyd, D. B., Eds.; VCH: New York, (in print)
    • Bally, T.; Borden, W. T. In Reviews in Computational Chemistry; Lipkowitz, K. B., Boyd, D. B., Eds.; VCH: New York, 1999; Vol. 13 (in print).
    • (1999) Reviews in Computational Chemistry , vol.13
    • Bally, T.1    Borden, W.T.2
  • 34
    • 85088082666 scopus 로고    scopus 로고
    • note
    • -1), a second, very soft imaginary mode appears.
  • 35
    • 85088081567 scopus 로고    scopus 로고
    • note
    • -1 at UHF), leading formally to PC (which is a transition state at these levels) but connecting in practice CC with TC.
  • 36
    • 11744308642 scopus 로고    scopus 로고
    • note
    • This structure which may be viewed as a distonic radical cation is called but-3-en-4-ylium-1-yl according to the standard chemical nomenclature.
  • 37
    • 11744359174 scopus 로고    scopus 로고
    • note
    • -1 for 0.05 au). Also, the respective normal coordinate varies greatly with differing step sizes. We tried to move downhill along the normal coordinate given by the force constant matrix obtained with a step size of 0.01 au. However, no matter how small we chose the distortion, the energy was invariably higher than that of the stationary point. Therefore, we cannot decide whether LC is a minimum or not on the RMP2 surface.
  • 38
    • 85088080583 scopus 로고    scopus 로고
    • note
    • -1).
  • 39
    • 11744284873 scopus 로고    scopus 로고
    • note
    • The trans conformation (dihedral angle = 180°) is a transition state for the interconversion of two twisted ones, at the UMP2 level about 4.2 kcal/mol higher than the latter. Surprisingly, the SCF methods also predict the cis structure (dihedral angle = 0°) to be a minimum, but this feature is not reproduced at the correlated levels and must hence be regarded as an artifact.
  • 44
    • 85088082089 scopus 로고    scopus 로고
    • note
    • ̇+.
  • 51
    • 0001983968 scopus 로고    scopus 로고
    • Simoes, J. A. M., Greenberg, A., Liebman, J. F., Eds.; Blackie Academic & Professional: London
    • Tsang, W. In Energetics of Organic Free Radicals; Simoes, J. A. M., Greenberg, A., Liebman, J. F., Eds.; Blackie Academic & Professional: London, 1996; p 22.
    • (1996) Energetics of Organic Free Radicals , pp. 22
    • Tsang, W.1
  • 53
    • 11744278886 scopus 로고    scopus 로고
    • note
    • At UMP2, TS12 leads to another minimum which is separated by a second transition state from MCPA. This minimum resembles MCPA, but the three-membered ring is distorted in the plane (see Supporting Information for the structure called MCPA-distorted).
  • 54
    • 11744294836 scopus 로고    scopus 로고
    • note
    • The orthogonal π orbitals in the triple bond of BTY give rise to two nearly degenerate electronic states of A′ and A″ symmetry. The SCF procedures tend to converge to the A′ state instead of to the A″ state, which is lower in energy at all levels (about 0.4 kcal/mol at UMP2).
  • 55
    • 11744305082 scopus 로고    scopus 로고
    • unpublished results of B3LYP calculations
    • Sastry, G. N.; unpublished results of B3LYP calculations.
    • Sastry, G.N.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.