Interaction between Dioxane and Nanocluster Polyoxomolybdates and Their Composites Containing Water-Soluble Polymers

New data are obtained on the thermodynamics and molecular mechanisms of the interaction between dioxane and nanocluster polyoxomolybdates of the keplerate and toroidal types, with their composites containing water-soluble nonionic polymers—polyvinyl alcohol and polyvinylpyrrolidone, and between the components of such composites. The studies are performed using a gravimetric variant of equilibrium interval sorption with thermodynamic cycle calculations, and by IR spectroscopy. The effect the nature of the sorbates and the sorbents has on the parameters of sorption is analyzed using the constructed sorption isotherms and the concentration dependences of the Gibbs energy, particularly by comparing dioxane to other low-molecular compounds that differ appreciably in polarity and their ability to form hydrogen bonds: methanol, benzene, acetone, and ethyl acetate.