• Interaction of dimethyl sulphoxide with chloranil by ESR and optical methods

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    • Keywords

       

      Charge transfer; electron spin resonance; optical property

    • Abstract

       

      The molecular charge-transfer absorption bands have been observed in solution of dimethyl sulphoxide (DMSO) and tetrachloro-p-benzoquinone (chloranil) in chloroform and cyclohexanone. The stability constant, the thermodynamic parameter of the complex and the extinction co-efficient of CT bands at 350 nm in chloroform and 360 nm in cylohexanone have been estimated on the assumption of the 1:1 complex formation. Detection of ESR signal of the solution of chloranil in pure DMSO (g ≈ 2) indicates the formation of chloranil radical anion, the precursor being the charge-transfer complex, which dissociates partly in high dielectric constant DMSO.

    • Author Affiliations

       

      A K Roy1 B K Sarkar1 S Sanyal1 2

      1. Saha Institute of Nuclear Physics, Calcutta - 700 009, India
      2. Bose Institute, Calcutta - 700 009, India
    • Dates

       
  • Pramana – Journal of Physics | News

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