Thermochemical investigation of some selected solvates of calix[4]resorcinarene

Lipophilic calix[4]resorcinarene derived from lauryl aldehyde forms stable crystalline solvates with a range of organic solvents: acetone, 1,4-dioxane , methylethyl ketone, dimethylformamide, dimethylacetamide, N-methylpyrroli dinone, butyronitrile, methanol, 1,2-dimethoxybenzene and acetonitrile. The composition and thermal stability of these solvates was followed by thermo gravimetric method, indicating a stoichiometry ranging from 1 to 3 (calixre sorcinarene/solvent). The activation energy was evaluated for the selected solvates. Molecular modelling, using Hyperchem 5.0 software, was applied to the selected solvates.