Thermodynamics of bis-(η6-diphenyl)chromium (I) fulleride [(η6-Ph2)2Cr]+[C60]− in the range from T → (0 to 360) K

In the present work, the temperature dependence of heat capacity Cp,m∘=f(T) of crystalline bis-(η6-diphenyl)chromium (I) fulleride [(η6-Ph2)2Cr]+[C60]− has been measured by precision adiabatic vacuum calorimetry between T = (6 and 360) K with an uncertainty of ±0.2%. In this temperature interval, the transformations were detected and their thermodynamic characteristics were estimated. The experimental data were used for calculating standard (po = 0.1 MPa) thermodynamic functions Cp,m∘/R, Δ0THm∘/RT, Δ0TSm∘/R and Φm∘/R=Δ0TSm∘/R-Δ0THm∘/RT (where R is the universal gas constant) in the range T → (0 to 360) K.