ABSTRACT

In the present research, the temperature dependence of the heat capacity C p;m 1/4 f oTP of pentaphenylantimony Ph5Sb has been measured between T = (6 and 350) K in the precision adiabatic vacuum calorimeter and from T = (327 to 415) K in the differential scanning calorimeter and reported for the first time. The melting of the sample has been observed within the above temperature range. The melting was accompanied by partial compound decomposition. The experimental results have been used to calculate the standard (p = 0.1 MPa) thermodynamic functions C p;m=R, DT 0H m=RT, DT 0S m=R, and U m=R 1/4 DT 0S m=R DT 0H m=RT (where R is the universal gas constant) of crystalline Ph5Sb over the range from T?0 K to 400 K. The energy of combustion of the compound under study has been determined in the isothermal combustion calorimeter with a stationary bomb. The standard thermodynamic functions of crystalline Ph5Sb formation at T = 298.15 K have been calculated.

Compounds

#	Formula	Name
1	O4Sb2	antimony oxide (Sb2O4)
2	CO2	carbon dioxide
3	H2O	water
4	O2	oxygen
5	C30H25Sb	pentaphenylantimony

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	5	Normal melting temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	5	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Vacuum adiabatic calorimetry	126
POMD	5	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Vacuum adiabatic calorimetry	29
POMD	5	Molar enthalpy function {Hm(T)-Hm(0)}/T, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Vacuum adiabatic calorimetry	29
POMD	5	Molar entropy, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Vacuum adiabatic calorimetry	29
POMD	5	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Large sample (1 g) DSC	30
RXND	1 5 2 3 4	Molar enthalpy of reaction, kJ/mol				Static bomb calorimetry	1

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Thermodynamic properties of pentaphenylantimony Ph5Sb over the range from T - 0 K to 400 K

Smirnova, N. N., Letyanina, I. A., Larina, V. N., Markin, A. V., Sharutin, V. V., Senchurin, V. S.

ABSTRACT