Thermochemical studies of 4-tert-butylbiphenyl and 4,4′-di-tert-butylbiphenyl

The standard massic energies of compounds of 4-tert-butylbiphenyl and 4,4′-di-tert-butylbiphenyl were measured at T = 298.15 K by static-bomb combustion calorimetry. The standard enthalpies of vaporization, fusion and sublimation were measured in a Calvet microcalorimeter, or by differential scannin...

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Published inThe Journal of chemical thermodynamics Vol. 41; no. 5; pp. 651 - 653
Main Authors Melkhanova, Svetlana V., Pimenova, Svetlana M., Chelovskaya, Nelly V., Miroshnichenko, Eugenii A., Pashchenko, Larisa L., Nesterov, Igor A., Naumkin, P.V.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.05.2009
Subjects
Alkylbiphenyls
Calorymetry
Combustion enthalpies
Formation enthalpies
Fusion enthalpies
Sublimation enthalpies
Thermochemistry
Vaporization enthalpies
Combustion enthalpies
Thermochemistry
Formation enthalpies
Vaporization enthalpies
Fusion enthalpies
Calorymetry
Alkylbiphenyls
Sublimation enthalpies
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Summary:The standard massic energies of compounds of 4-tert-butylbiphenyl and 4,4′-di-tert-butylbiphenyl were measured at T = 298.15 K by static-bomb combustion calorimetry. The standard enthalpies of vaporization, fusion and sublimation were measured in a Calvet microcalorimeter, or by differential scanning calorimetry. The standard molar enthalpies of formation in the condensed and gaseous states were obtained from these data. The tert-butyl group increments for the substitution of one hydrogen atom in a position “4” in biphenyl molecule were calculated.
ISSN:0021-9614
1096-3626
DOI:10.1016/j.jct.2008.12.015