• π* ←π electronic transition in hydroxy-benzonitriles. I. Orthohydroxybenzonitrile

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    • Keywords

       

      Infrared spectrum; Raman spectrum; electronic absorption spectrum; vibronic analysis

    • Abstract

       

      The longest wavelengthπ* ←π electronic band system of ortho-hydroxybenzonitrile vapour through the absorption technique has been reported for the first time. Assuming a planar molecular geometry in both the electronic states, the molecule is classified into aCs point group, and the present spectrum is attributed to1A′ ←1A′ type corresponding to electric dipole forbidden transition1B2u1A1g (260 nm band system) of benzene. The most intense band at 33914 cm−1 has been assigned as the 0, 0 band, and the other vibronic bands have been interpreted in terms of the excited state and a few ground state fundamentals.

    • Author Affiliations

       

      S Ram1 2 J S Yadav1 H D Bist1 2

      1. Department of Physics, Banaras Hindu University, Varanasi - 221 005, India
      2. Department of Physics, Indian Institute of Technology, Kanpur - 208 016, India
    • Dates

       
  • Pramana – Journal of Physics | News

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