Raman glassy state solutions

P ig. 10. Raman stretching frequencies for glassy-state solutions of lanthanide chlorides (O) and nitrates (A) in water. 

The ability of vibrational spectroscopy (infrared and Raman) to probe the different interactions which take place in a solution is well known. From the classic reviews by Irish and Brooker [1] and Gardiner [2], both published in 1977, which cover the Raman spectroscopy of ionic interactions in aqueous and nonaqueous solutions, a number of works have appeared reviewing vibrational spectroscopic studies [3-13]. However, many of these embrace only partial aspects or they are exclusively devoted to one specific type of solution (aqueous or nonaqueous) and do not include topics that will be discussed in the present chapter, such as solutions at high pressures and temperatures, electrolyte polymers, or solutions in the glassy state. The aims of this review are, as its title indicates, the ion-ion interactions whose theoretical aspects have been recently approached in a comprehensive monograph by Barthel and co-workers [14]. This means that aspects related to the Raman spectroscopic studies of the solvent s structure or the interactions between the solute and the solvent (ion hydration or, in general, solvation) will be treated briefly. 

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