ABSTRACT

The low-temperature heat capacity of 4-nitro-40-tert-butyl-diphenyl oxide was measured by vacuum adiabatic calorimetry over the temperature range (7-372) K. The temperature, the enthalpy and the entropy of fusion and the temperature, the jump of the heat capacity, and the range of devitrification of the glasstransition were determined. Heat capacity and main thermodynamic functions (changes of entropy, enthalpy, and Gibbs energy) in condensed state are tabulated as a function of temperature from 5 K to 370 K. The entropy of formation at T = 298.15 K of 4-nitro-40-tert-butyl-diphenyl oxide in the crystal state was computed on the basis of the experimental results obtained.

Compounds

#	Formula	Name
1	C16H17NO3	1-(tert-butyl)-4-(4-nitrophenoxy)benzene

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	Triple point temperature, K ; Crystal			Crystal Liquid Gas	Adiabatic calorimetry	1
POMD	1	Triple point temperature, K ; Glass			Glass Liquid Gas	Adiabatic calorimetry	1
POMD	1	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Gas	Adiabatic calorimetry	1
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	369
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Metastable liquid	Temperature, K; Metastable liquid	Pressure, kPa; Metastable liquid	Metastable liquid	Small (less than 1 g) adiabatic calorimetry	26
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Glass	Temperature, K; Glass	Pressure, kPa; Glass	Glass	Small (less than 1 g) adiabatic calorimetry	175
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	40
POMD	1	Molar enthalpy function {Hm(T)-Hm(0)}/T, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Small (less than 1 g) adiabatic calorimetry	40
POMD	1	Molar entropy, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Small (less than 1 g) adiabatic calorimetry	40
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small (less than 1 g) adiabatic calorimetry	5
POMD	1	Molar enthalpy function {Hm(T)-Hm(0)}/T, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small (less than 1 g) adiabatic calorimetry	5
POMD	1	Molar entropy, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small (less than 1 g) adiabatic calorimetry	5

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Low temperature heat capacity and thermodynamic parameters of phase transitions of 4-nitro-4'-tert-butyl-diphenyl oxide

Druzhinina, A. I., Pimenova, S. M., Lukyanova, V. A.

ABSTRACT