Thermodynamic properties of some biphenyls. Enthalpies of formation and reorganization of aromatic radicalsстатья
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Дата последнего поиска статьи во внешних источниках: 22 октября 2018 г.
Аннотация:Abstract Vaporization enthalpies of 4-nitrobiphenyl and 1,1'-biphenyl are obtained by calorimetric method. A quantitative approach is considered that connects together the values of the main characteristics of the compounds, namely, the formation enthalpies, the enthalpy of atomization, the breaking energy of chemical bonds, average thermochemical energies of bonds, energies of reorganization for fragments of a molecule upon its decay on radicals (“energies of reorganization of radicals”). The results of calculations of the reorganization energies for 73 radicals obtained on the basis of the double difference method are presented; the regularities of the change in these quantities are analyzed. A comparison of a series of values with obtained earlier is made on the basis of a recalculation from bond breaking energies