Thermochemical properties of crown ether compounds

The constant-volume combustion energies have been determined for three kinds of crown ether (CE) using a precision rotating-bomb calorimeter (RBC). The standard enthalpies of combustion, ΔcCEHθ, and standard enthalpies of formation, ΔfCEHθ, have been calculated for these CE. Two empirical formulas have been proposed about the standard combustion enthalpies of aromatic CE.