Journal of Chemical Sciences

, Volume 113, Issue 5–6, pp 497–514 | Cite as

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



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.


NASICON glasses dynamical bond-switching mechanism dispropor-tionation reactions 


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Copyright information

© Indian Academy of Sciences 2001

Authors and Affiliations

  1. 1.Solid State and Structural Chemistry UnitIndian Institute of ScienceBangaloreIndia

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