Two-photon excitation spectrum of benzonitrile vapour

Periasamy, N. ; Doraiswamy, S. (1983) Two-photon excitation spectrum of benzonitrile vapour Pramana - Journal of Physics, 21 (1). pp. 79-88. ISSN 0304-4289

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The two-photon excitation spectrum of benzonitrile in the gas phase at about 1 torr has been recorded and analysed in the total energy region of 36300 to 40500 cm-1 using both linearly and circularly polarised light from a Nd-YAG pumped dye laser. The two-photon spectrum consists of strong Franck Condon (FC) transitions bearing a good resemblance to the one-photon spectrum and also vibronic coupling (VC) transitions essentially arising out of the analogue of the benzene ν14. By a comparative study of the TP spectra of various other monosubstituted benzenes, it has been inferred that the strongtp spectrum of benzonitrile should be ascribed to a considerable π charge delocalization over the phenyl and nitrile groups.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Two-photon Spectroscopy; Benzonitrile
ID Code:38025
Deposited On:22 Apr 2011 12:17
Last Modified:17 May 2016 20:55

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