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Volumn 72, Issue 22, 2007, Pages 8186-8195

Carbazolyl nitrenium ion: Electron configuration and antiaromaticity assessed by laser flash photolysis, trapping rate constants, product analysis, and computational studies

Author keywords

[No Author keywords available]

Indexed keywords

CARBAZOLYL NITRENIUM ION; COMPUTATIONAL STUDIES; ELECTRON CONFIGURATION; LASER FLASH PHOTOLYSIS;

EID: 35549006814     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo0708184     Document Type: Article
Times cited : (18)

References (68)
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    • Falvey, D. E. In Reactive Intermediates; Moss, R. A., Platz, M. S., Maitland Jones, J., Eds.; John Wiley & Sons: New York, 2004.
    • (2004) Reactive Intermediates
    • Falvey, D.E.1
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    • Bogdal, D. ARKIVOK 2001, 6, 109-115.
    • (2001) ARKIVOK , vol.6 , pp. 109-115
    • Bogdal, D.1
  • 30
    • 0037028189 scopus 로고    scopus 로고
    • 3CN and the more defined 570 nm peak of the radical relative to the 570 nm peak of the nitrenium ion. See Supporting Information for radical spectrum and LFP of 4a in the presence of DMB. For a previously published spectrum, see: Dilabio, G. A.; Litwinienki, G.; Lin, S.; Pratt, D. A.; Ingold, K. U. J. Phys. Chem. A 2002, 106, 11719-11725.
    • 3CN and the more defined 570 nm peak of the radical relative to the 570 nm peak of the nitrenium ion. See Supporting Information for radical spectrum and LFP of 4a in the presence of DMB. For a previously published spectrum, see: Dilabio, G. A.; Litwinienki, G.; Lin, S.; Pratt, D. A.; Ingold, K. U. J. Phys. Chem. A 2002, 106, 11719-11725.
  • 31
    • 35549001424 scopus 로고
    • For a paper on the reactions of the carbazolyl radical, see
    • For a paper on the reactions of the carbazolyl radical, see: Waters, W. A.; White, J. E. J. Chem. Soc. C: Organic 1968, 6, 740-745.
    • (1968) J. Chem. Soc. C: Organic , vol.6 , pp. 740-745
    • Waters, W.A.1    White, J.E.2
  • 33
    • 33746056069 scopus 로고    scopus 로고
    • 3CN (SCE reference). See Nie, G.; Xu, J.; Zhang, S.; Han, X. J. Appl. Electrochem. 2006, 36, 937-944.
    • 3CN (SCE reference). See Nie, G.; Xu, J.; Zhang, S.; Han, X. J. Appl. Electrochem. 2006, 36, 937-944.
  • 34
    • 35548990638 scopus 로고    scopus 로고
    • Based on photolysis performed using 350 nm bulbs; 254 nm photolysis gave a complex mixture of products including 5 carbazole-collidine isomers, carbazole, collidine, and 2 TMB adducts. Many of these products from 254 nm photolysis presumably arise from secondary photolysis, chemistry resulting from excitation of TMB, or reactions with accumulated photoproducts.
    • Based on photolysis performed using 350 nm bulbs; 254 nm photolysis gave a complex mixture of products including 5 carbazole-collidine isomers, carbazole, collidine, and 2 TMB adducts. Many of these products from 254 nm photolysis presumably arise from secondary photolysis, chemistry resulting from excitation of TMB, or reactions with accumulated photoproducts.
  • 35
    • 35548972558 scopus 로고    scopus 로고
    • This rate constant for chloride trapping is slightly larger than the estimated diffusion limit for CH3CN 1.8 × 1010 M-1s-1, This anomaly could be explained by errors arising from obtaining trapping rate constants for a transient with a lifetime just inside the detection limit of our laser. Alternatively, it has been shown that the Stokes-Einstein-Smoluchowski equation often underestimates k diff by a factor of ∼2 due to assumptions about the radii of the reacting species
    • diff by a factor of ∼2 due to assumptions about the radii of the reacting species.
  • 38
    • 35548966249 scopus 로고    scopus 로고
    • The largest absorption band for this type of sigma complex has been previously observed for addition of TMB to diarylnitrenium ions at ca. 315-345 nm in CH3CN and for the halogenated diarylnitrenium ions at 400-420 nm. See Thomas, S. I, Falvey, D. E. J. Org. Chem. 2006, 72, 4626-4634
    • 3CN and for the halogenated diarylnitrenium ions at 400-420 nm. See Thomas, S. I.; Falvey, D. E. J. Org. Chem. 2006, 72, 4626-4634,
  • 50
    • 0035353481 scopus 로고    scopus 로고
    • Schleyer, P. Chem. Rev. 2001, 101, 1115-1117.
    • (2001) Chem. Rev , vol.101 , pp. 1115-1117
    • Schleyer, P.1
  • 63
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    • Frisch, M. J. T.; et al. Gaussian03, revision B.03; Gaussian, Inc.: Pittsburgh, PA, 2003.
    • Frisch, M. J. T.; et al. Gaussian03, revision B.03; Gaussian, Inc.: Pittsburgh, PA, 2003.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.