Thermodynamics of vaporization of 3-isopropylbiphenyl. To an equation on temperature dependence of vaporization enthalpiesстатья
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Дата последнего поиска статьи во внешних источниках: 20 сентября 2015 г.
Аннотация:Abstract
Enthalpies of vaporization,ΔglH∘m,were determined for 3-isopropylbiphenyl in the temperature range from 323 to 373 K. Measurements were performed on an isothermal heat conducting Calvet microcalorimeter according to the standard procedure with an estimated accuracy of 0.7 per cent. The average values of the standard enthalpies of vaporization were adjusted to 298.15 K. The latter has been used to calculate the standard formation enthalpy for 3-isopropylbiphenyl in the gaseous state. A second-order group additivity method has been applied to predict the vaporization enthalpies of some cyclic compounds. The contributions of tert-butyl, methyl, and isopropyl group to the vaporization enthalpies of the aromatic hydrocarbon derivatives are estimated.