Heat capacity and thermodynamic functions of ferrocenemethanol

Abstract

The heat capacity (C p, m) of ferrocenemethanol (FM) C5H5FeC5H4CH2OH 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.