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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/106/01/0073-0082

    • Keywords

       

      Indanetrione; n, {π*} transition; cis-vicinal triketo group; cyclic ethers; open-chain ethers

    • Abstract

       

      The lowestS1(n, π*) transition (absorption) of indanetrione having acis-vicinal triketo group exhibits a large blue-shift in cyclic saturated ethers compared to that in an open-chain saturated ether. This transition of indanetrione in mixed solvents containing a cyclic saturated ether (tetrahydrofuran, dioxane and tetrahydropyran) as one of the components and a non-polar or less polar solvent as the other component has been studied at room temperature. The spectra are also studied in pure cyclic saturated ethers as a function of temperature. These studies suggest a specific interaction between indanetrione and cyclic ethers in the ground state. Similar studies in open-chain saturated ethers indicate the absence of such an interaction. The nature of the specific interaction has been discussed.

    • Author Affiliations

       

      Jayanta Roy1 Surajit Bhattacharya1 Shampa Samanta1 Sanjib Ghosh1

      1. Department of Chemistry, Presidency College, Calcutta - 700 073, India

    • Dates

       
      Published
      February 1994
      Manuscript received
      15 July 1993
      Manuscript revised
      17 December 1993

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