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Volumn 110, Issue 28, 2006, Pages 8942-8951

An assessment of theoretical procedures for predicting the thermochemistry and kinetics of hydrogen abstraction by methyl radical from benzene

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVATION ENERGY; BENCHMARKING; BENZENE; COMPUTATIONAL GEOMETRY; ENTHALPY; PARAMETER ESTIMATION; PROBABILITY DENSITY FUNCTION; REACTION KINETICS; SENSITIVITY ANALYSIS;

EID: 33746907036     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp061823z     Document Type: Article
Times cited : (75)

References (83)
  • 12
    • 0003708516 scopus 로고
    • Léger, A., d'Hendecourt, L., Boccara, N., Eds.; NATO ASI Series, Series C 191; Reidel: Dordrecht
    • (a) Polycylic Aromatic Hydrocarbons and Astrophysics; Léger, A., d'Hendecourt, L., Boccara, N., Eds.; NATO ASI Series, Series C 191; Reidel: Dordrecht, 1987.
    • (1987) Polycylic Aromatic Hydrocarbons and Astrophysics
  • 74
    • 33746916318 scopus 로고    scopus 로고
    • note
    • Values used in the present study for B3-LYP/6-31+G(d,p) are 0.9806 (ZPVE) and 0.9989 (ΔΔH), while for BMK/6-31+G(d,p), they are 0.95 (ZPVE) and 0.98 (ΔΔH).
  • 75
    • 33746913769 scopus 로고    scopus 로고
    • note
    • Geometries of reactants and products at the B3-LYP/6-31 +G(d,p), BMK/6-31+G(d,p), and CCSD/6-31+G(d,p) levels are presented in Table SI.
  • 76
    • 33746881301 scopus 로고    scopus 로고
    • note
    • Since the rotation of the methyl group in the TS has a very low frequency, the effect of the DFT integration grid on the value of the computed frequencies was checked using the B3-LYP and BP86 functionals. However, as shown in Table S2, the results are independent of the integration grid used.
  • 77
    • 33746893285 scopus 로고    scopus 로고
    • note
    • The component absolute energies, ZPVEs, and thermal corrections are presented in Table S3 of the Supporting Information.
  • 78
    • 33746896058 scopus 로고    scopus 로고
    • http://webbook.nist.gov/chemistry.
  • 79
    • 33746883439 scopus 로고    scopus 로고
    • note
    • We note that W1 is based on the URCCSD(T) procedure of MOLPRO, as is G3-RAD and G3(MP2)-RAD. CBS-QB3, on the other hand, is based on the fully unrestricted UMP2 and UCCSD(T) procedures of Gaussian, together with a spin correction. The comparison of results among the various methods partly reflects this unrestricted/restricted treatment. The experimental reaction enthalpy values lie between those based on URCCSD-(T) and those based on spin-corrected UCCSD(T) but are closer to the former.
  • 80
    • 33746887635 scopus 로고    scopus 로고
    • note
    • Calculated from the vibrationless enthalpy in Table 2 and the ZPVE and ΔΔH corrections in Table S3 of the Supporting Information.
  • 81
    • 33746934037 scopus 로고    scopus 로고
    • note
    • -1, very close to the experimental value.
  • 82
    • 33746920200 scopus 로고    scopus 로고
    • note
    • For molecules containing only first-row elements, G3-RAD and G3X-RAD only differ in the choice of geometry and would give identical results in the present study (where prescribed geometries are used).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.