Abstract
By using different techniques the vapor pressure of ferrocene, mono-acetyl ferrocene and 1,1′-di-acetyl ferrocene was measured. The following pressure—temperature equations were derived ferrocene log P(kPa)= 9.78 ± 0.14 − (3805 ± 46)/ T mono-acetyl ferrocene log P(kPa) = 14.83 ± 0.14 − (5916 ± 48)/ T 1,1′-di-acetyl ferrocene log P(kPa) = 8.82 ± 0.11 − (4289 ± 44)/ T By second- and third-law treatment of the vapor data the Δ H 0 sub,298 = 74.0 ± 2.0 kJ mole −1 for the sublimation process of ferrocene was calculated and compared with the literature data. For the sublimation enthalpy of mono- and 1,1′-di-acetyl ferrocene the values Δ H 0 sub,298 = 115.6 ± 2.5 kJ mole −1 and Δ H 0 sub,298 = 91.9 ± 2.5 kJ mole −1 were derived by second-law treatment. Thermal functions of these compounds were also estimated.
Published Version
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