Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Heat Capacity and Standard Thermodynamic Functions of Triphenylantimony Bis(1-adamantanecarboxylate) over the Range from (0 to 520) K

Letyanina, I.[Irina], Markin, A.[Alexey], Smirnova, N.[Natalia], Sologubov, S.[Semen], Sharutin, V.[Vladimir]
J. Chem. Eng. Data 2013, 58, 11, 3087-3095
ABSTRACT
Heat capacities of triphenylantimony bis(1-adamantanecarboxylate) Ph3Sb[OC(O)C10H15]2 were measured with a precision adiabatic vacuum calorimeter over the temperature range from T = (6 to 353) K and with differential scanning calorimeter over the temperature range from T = (320 to 520) K. The thermal behavior of the compound under study was investigated over the range from T = (250 to 530) K. It was revealed that triphenylantimony bis(1-adamantanecarboxylate) could exist in crystalline, liquid, glassy, and overcooled liquid states. On the obtained data, the standard thermodynamic functions of molar heat capacity Cp,m, enthalpy H(T) H(0), entropy S(T), and Gibbs energy G(T) H(0) of Ph3Sb[OC(O)C10H15]2 were calculated over the range from T = (0 to 498) K. The low-temperature (T less than 50 K) heat capacity dependence was analyzed on the basis of Debye s heat capacity theory of solids and its multifractal model, so the characteristic temperature and the fractal dimension were determined, and chain-layered structure topology was established. The standard entropy of formation at T = 298.15 K of Ph3Sb[OC(O)C10H15]2 (cr) ?fSm(298.15, Ph3Sb[OC(O)C10H15]2, cr) = (-2885 +- 8) J*K 1*mol 1 was calculated. Some thermodynamic properties of triphenylantimony bis(1-adamantanecarboxylate) were compared with similar data of other organic derivatives of antimony(V) studied earlier.
Compounds
# Formula Name
1 C40H45O4Sb triphenyl-.lambda.5-stibanediyl bis(adamantane-1-carboxylate)
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
  • Small (less than 1 g) adiabatic calorimetry
  • 191
  • POMD
  • 1
  • Molar heat capacity at constant pressure, J/K/mol ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • Small (less than 1 g) adiabatic calorimetry
  • 56
  • POMD
  • 1
  • Molar enthalpy, kJ/mol ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • Small (less than 1 g) adiabatic calorimetry
  • 56
  • POMD
  • 1
  • Molar entropy, J/K/mol ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • Small (less than 1 g) adiabatic calorimetry
  • 56