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Volumn 110, Issue 30, 2006, Pages 9420-9428

CASCSF study on the photochemical transposition reactions of pyrazines

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRON ENERGY LEVELS; ISOMERIZATION; MOLECULAR DYNAMICS; PHOTOCHEMICAL REACTIONS; PHYSICAL CHEMISTRY; POTENTIAL ENERGY;

EID: 33748286825     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp060995t     Document Type: Article
Times cited : (16)

References (35)
  • 8
    • 37049077510 scopus 로고
    • One referee pointed out that the references given in ref 2 are rather old (1966-1972). A thorough review of literature shows that such newer references describing mechanistic studies of photochemistry of N-hetero-cycles do exist as follows. Nevertheless, after we carefully checked these related papers, it was found that none of them are related to pyrazines, which we studied in this work. Also see (a) Liao, C.-C,; Hsieh, H.-P.; Lin, S.-Y. J. Chem. Soc., Chem. Commun. 1990, 545.
    • (1990) J. Chem. Soc., Chem. Commun. , pp. 545
    • Liao, C.-C.1    Hsieh, H.-P.2    Lin, S.-Y.3
  • 22
    • 33748302150 scopus 로고
    • More supporting evidence comes from the fact that by irradiation of pyrazine almost no reaction appears to take place at 3130 A. In fact, it had been shown that by exciting the molecule into singlet nπ* at 3130 A one can obtain triplet ππ* through the intersystem crossing without exciting the singlet ππ*. See (a) El-Sayed, M. A. J. Chem. Phys. 1962, 36, 373.
    • (1962) J. Chem. Phys. , vol.36 , pp. 373
    • El-Sayed, M.A.1
  • 26
    • 33748304329 scopus 로고    scopus 로고
    • note
    • An excited state with geometry identical to the ground state is sometimes called a Franck-Condon (FC) state.
  • 31
    • 33748286929 scopus 로고    scopus 로고
    • note
    • The C-C, C-N, and C-H bonds in 2-methylpyrazine (3) are fixed to be 1.35, 1.35, and 1.09 Å, respectively. Also, the ∠CCC, ∠CNC, ∠HCC, and ∠CCN bond angles are fixed to be 120°, 120°, 120°, and 120°, respectively.
  • 32
    • 33748305788 scopus 로고    scopus 로고
    • note
    • 0 species.
  • 34
    • 33748319543 scopus 로고    scopus 로고
    • note
    • For instance, 2-substituted thiophenes were found to rearrange into 3-substituted thiophenes, and 1,4-dimethylimidazoles into 1,2-dimethylimi-dazoles. For more experimental details, see ref 1.
  • 35
    • 33748291624 scopus 로고    scopus 로고
    • Su, M.-D., to be submitted for publication
    • Su, M.-D., to be submitted for publication.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.