Motion oxidized functional group

Figure 2 Properties in polyphosphazenes are determined hy (1) the backbone bonds that control the inherent flexibility of the polymer via their influence on bond torsional freedom, and also provide photo-and thermo-oxidative stahihty (2) the side groups control polymer solubility, reactivity, thermal stability, crystallinity, cross-linking, and (indirectly) polymer flexibility (3) free volume between the side groups affects polymer motion, solvent penetration, membrane behavior, and density (4) functional groups (usually introduced hy secondary reactions) affect soluhihty, biological behavior, proton conduction, cross-hnking, and many other properties...

We now allow nuclear motion and seek vibrational wave functions corresponding to states i i and tjfg. We assume throughout that the subunits have the same point group symmetry in both oxidation states (M and N), and then it is only necessary to consider explicitly totally symmetric normal coordinates of the two subunits (4, 5). Let us assume that there are two on each... 

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