Enthalpies of combustion and formation of fullerene C 70 by isoperibolic combustion calorimetry

Abstract

A micro static-bomb combustion calorimeter developed from a 1107 Parr semi-micro bomb, has been used for the measurement of the enthalpy of combustion of the fullerene C 70, yielding Δ c U o m (cr, T=298.15 K)=−(30099.7 ± 56.9) kJ · mol −1. The enthalpy of formation in the gas phase is derived from the experimental results and from literature data. The calculation of the enthalpy of formation by carbon atom, the strain energy, and the bond enthalpies give insight about the stability of each fullerene.