Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Redetermination of low-temperature heat capacity of Cu(C5H7O2)2

Bespyatov, M.A.
J. Chem. Thermodyn. 2019, 137, 1-6
ABSTRACT
The heat capacity of copper bis-acetylacetonate (Cu(C5H7O2)2) was measured over the temperature range (6.54-313.16) K by adiabatic-shield calorimetry. No anomalies associated with phase transition were found in the functional heat capacity behaviour. The Debye temperature at 0 K was calculated. The data obtained were used to calculate its thermodynamic functions (entropy, enthalpy, reduced Gibbs energy) in the range (0-313) K. They have the following values at 298.15 K: Cp.deg. = (283.9 +- 0.5) J K-1 mol-1, delta0298.15Sm.deg. = (359.1 +- 0.8) J K-1 mol-1, delta0298.15Hm.deg. = (50.94 +- 0.09) kJ mol-1, phim.deg. = (188.3 +- 1.1) J K-1 mol-1. The value of the absolute entropy were used to calculate the entropy of formation of Cu(C5H7O2)2 (cr) at T = 298.15 K. The universal heat capacity behaviour of metal acetylacetonates was demonstrated in a wide temperature range.
Compounds
# Formula Name
1 C10H14CuO4 bis(2,4-pentanedionato-O,O')copper
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Molar heat capacity at constant pressure, J/K/mol ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • Vacuum adiabatic calorimetry
  • 74
  • POMD
  • 1
  • Molar heat capacity at constant pressure, J/K/mol ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • Vacuum adiabatic calorimetry
  • 40
  • POMD
  • 1
  • Molar entropy, J/K/mol ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • Vacuum adiabatic calorimetry
  • 40
  • POMD
  • 1
  • Molar enthalpy, kJ/mol ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • Vacuum adiabatic calorimetry
  • 40