| Autor: |
Guillaume, François, Perrot, Michel, Rothschild, Walter G. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 11/1/1985, Vol. 83 Issue 9, p4338, 6p |
| Abstrakt: |
We have analyzed the VV- and VH-Raman band profiles of the N–O symmetric stretching fundamental of the nitrate anion of 1 mol/l NaNO3 (or LiNO3) in Li+Cl--enriched aqueous solutions for the liquid phase between 263 and 353 K and for the vitreous state at 77 K. From the observed isothermal correlation time of the orientational mobility of the C3 axis of NO-3 in Li+-rich solution and from the band asymmetry of the corresponding isotropic profile at increasing temperature, we propose an endothermic local-structure-reforming process that favors incorporation of a few Li+ ions into the solvation sphere of the anions. The vitreous state of 1 mol/l LiNO3 or NaNO3 in the LiCl-rich systems, which shows considerable local order about the nitrate anion, is conceptualized as a percolation cluster of solvated cation–anion interaction that breaks up into cluster distributions for the liquid phase. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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