Enthalpy of formation and C-F bond enthalpy of fluorofullerene C60F36статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 29 мая 2015 г.
Аннотация:The standard molar enthalpy of combustion of fluorofullerene C60F36 was determined by rotating-bomb calorimetry, Delta(c)H(m)(o) = -24692 +/- 199 kJ.mol(-1). Using this result and the standard molar enthalpy of sublimation, Delta(sub)H(m)(o) = 139 +/- 8 kJ.mol(-1), the values of the standard molar enthalpies of formation of C60F36 in the crystalline and gaseous states were found to be -5362 +/- 201 kJ.mol(-1) and -5223 +/- 201 kJ.mol(-1), respectively. The enthalpy of reaction C60F36(g) = C-60(g) + 36F(g) was calculated, Delta(r)H(m)(o)(298.15 K) = (10617 +/- 202) kJ.mol(-1), or 294.9 +/- 5.6 kJ.mol(-1) per one C-F bond. The comparison with the enthalpy of reaction C60F48 = C-60(g) + 48F(g), Delta(r)H(m)(o)(298.15 K) = 287.5 +/- 3.5 kJ.mol(-1) per C-F bond leads to a preliminary conclusion that C-F bond enthalpy decreases with amount of F atoms attached to the fullerene cage.