The heat capacity of Cr(C5H7O2)3 has been measured by the adiabatic method within the temperature range 5 320 K. An anomaly with a maximum at ~60K has been discovered which points to the phase transformation of the compound. Anomalous contributions to entropy and enthalpy have been revealed. The thermodynamic functions (entropy, enthalpy and reduced Gibbs energy) at 298.15K have been calculated using the obtained experimental heat capacity data. The Raman spectra have been measured in the frequency range 60 400 cm-1 and in the temperature range 5 220 K. It has been discovered that a new line (109 cm-1) appears at ~60 K. The nature of these peculiarities in heat capacity and in Raman spectra is discussed.
Compounds
#
Formula
Name
1
C15H21CrO6
tris(2,4-pentanedionato)chromium
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