Thermodynamic Properties of Hydrofullerene C60H36 from 5 to 340 K |
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Authors: | Lebedev B. V. Bykova T. A. Lobach A. S. |
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Affiliation: | (1) Chemistry Institute, Nizhny Novgorod State University, Nizhny Novgorod, Russia;(2) Institute of Chemical Physics Problems of RAS, Chernogolovka, Moscow Region, Russia |
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Abstract: | The temperature dependence of the molar heat capacity (C0 p) of hydrofullerene C60H36 between 5 and 340 K was determined by adiabatic vacuum calorimetry with an error of about 0.2%. The experimental data were used for the calculation of the thermodynamic functions of the compound in the range 0 to340 K. It was found that at T=298.15 K and p=101.325 kPa C0 p (298.15)=690.0 J K−1 mol−1,Ho(298.15)−Ho(0)= 84.94 kJ mol−1,So(298.15)=506.8 J K−1 mol−1, Go(298.15)−Ho(0)= −66.17 kJ mol−1. The standard entropy of formation of hydrofullerene C60H36 and the entropy of reaction of its formation by hydrogenation of fullerene C60 with hydrogen were estimated and at T=298.15 K they were ΔfSo= −2188.4 J K−1 mol−1 and ΔrSo= −2270.5 J K−1mol−1, respectively. This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | adiabatic vacuum calorimeter heat capacity hydrofullerene C60H36 thermodynamic functions |
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