Heat capacity and thermodynamic functions of ferrocenemethanol

The heat capacity (C p, m) of ferrocenemethanol (FM) C 5H5FeC5H4CH2OH have been measured by the low-temperature adiabatic calorimetry method in the range 6-371 K. The triple point temperature, the enthalpy of fusion, and the purity of the substance under consideration have been determined. The ideal gas thermodynamic functions of FM-absolute entropy S m(g) 0 and change in the enthalpy Δ 0 T H m at 298.15 K-have been derived from the heat capacity data and the known values of the saturation vapor pressure and enthalpy of sublimation. The ideal gas thermodynamic functions C p, m 0 and S m(g) 0 and the enthalpy of formation of FM have been calculated by the empirical difference method at T = 298.15 K. The experimental and calculated values of the thermodynamic functions are consistent within error limits, which proves their reliability. © 2007 Allerton Press, Inc.