Abstract
The temperature dependence of the heat capacity of crystalline bis-(η5-cyclopentadienylirondicarbonyl) was studied over the temperature range 5–495 K in precision adiabatic vacuum and differential scanning calorimeters. The temperature dependence contained an anomaly (160–295 K) with a maximum at 250 K interpreted as a λ transition in the solid state. The fusion of the sample occurred at 435–491 K; it was accompanied by partial substance decomposition. The thermodynamic functions of crystalline bis-(η5-cyclopentadienylirondicarbonyl) were calculated from T→0 to 472.9 K. The enthalpy of combustion of the compound was determined in an isothermal calorimeter with a stationary bomb. The standard thermodynamic functions of its formation in the crystalline state at 298.15 K were calculated.
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Original Russian Text © M.S. Kozlova, A.V. Markin, V.N. Larina, L.G. Domracheva, M.S. Sheiman, N.V. Karyakin, 2008, published in Zhurnal Fizicheskoi Khimii, 2008, Vol. 82, No. 12, pp. 2218–2223.
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Kozlova, M.S., Markin, A.V., Larina, V.N. et al. The thermodynamic properties of bis-(η5-cyclopentadienylirondicarbonyl). Russ. J. Phys. Chem. 82, 1993–1998 (2008). https://doi.org/10.1134/S0036024408120030
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DOI: https://doi.org/10.1134/S0036024408120030