Thermodynamics from crystallographic information

For speetroseopie analysis (e.g. XRF, XRD, IR, Raman, Mossbauer etc.), a plot of the observed intensity versus the eorresponding wavelength or frequeney (or some other related parameter) is ealled the spectrum of that particular analytical method. The spectrum or the data obtained from such experiments contain information about nature of the interactions, atomic and molecular energy levels, chemical bonds, crystallographic information and other related processes. When only the item of interest is identified, it is called qualitative analysis and when the amoimt present is estimated, it is known as quantitative analysis. The effect of heat on a sample is reflected through its variation of thermodynamic properties. Such studies are done by thermal analysis. 

Much of the literature information concerning the influence of solvent on polymorph crystallization is derived from the conventional crystallization system. The effect of solvent appears to be dictated by kinetics rather than by thermodynamics (30). The solvent may act by selective adsorption to certain crystallographic faces of the polymorphs, thereby inhibiting their nucleation or retarding their growth to the advantage of others. Similar solvent behavior... 

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