In the present work, the temperature dependence of heat capacity C-p,m(o) = f(T) of crystalline bis-(eta(6)-diphenyl)chromium (I) fulleride [(eta(6)-Ph-2)(2)Cr](+)[C-60](center dot-) 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 (p(o) = 0.1 MPa) thermodynamic functions C-p,m(o)/R, Delta H-T(0)m(o)/RT, Delta S-T(0)m(o)/R and Phi(o)(m)/R = Delta S-T(0)m(o)/R - Delta H-T(0)m(o)/RT (where R is the universal gas constant) in the range T -> (0 to 360) K. (C) 2005 Elsevier Ltd. All rights reserved.