• Infrared and Raman spectroscopic studies of glasses with NASICON-type chemistry

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      https://www.ias.ac.in/article/fulltext/jcsc/113/05-06/0497-0514

    • Keywords

       

      NASICON glasses; dynamical bond-switching mechanism; dispropor-tionation reactions

    • Abstract

       

      Structures of NASICON glasses of the general formula AB2(PO4)3, where A = Li, Na or K and B = Fe, Ga, Ti, V or Nb, have been investigated using vibrational (IR and Raman) spectroscopies. Phosphate species appear to establish an equilibrium via a disproportionation reaction involving a dynamical bond-switching mechanism where both charge and bonds are conserved. B ions in the system acquire different coordinations to oxygens. Alkali ions cause absorptions due to cage vibrations. All the observed spectroscopic features are consistent with speciation involving disproportionation reactions.

    • Author Affiliations

       

      K J Rao1 K C Sobha1 Sundeep Kumar1

      1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore - 560 012, India
    • Dates

       
  • Journal of Chemical Sciences | News

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