Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Thermochemical properties of two benzimidazole derivatives: 2-Phenyl- and 2-benzylbenzimidazole

Ribeiro da Silva, M. A. V.[Manuel A. V.], Ribeiro da Silva, M. D. M. C.[Maria D. M. C.], Amaral, L. M. P. F.[Luisa M. P. F.], Elguero, J.[Jose], Jimenez, P.[Pilar], Roux, M. V.[MarIa Victoria], Davalos, J. Z.[Juan Z.], Temprado, M.[Manuel], Cabildo, Pilar, Claramunt, Rosa, Mo, O.[Otilia], Yanez, M.[Manuel]
J. Chem. Thermodyn. 2005, 37, 11, 1168-1176
ABSTRACT
The standard (p? = 0.1 MPa) molar enthalpy of formation for gaseous 2-phenylbenzimidazole (2-PhBIM) and 2-benzylbenzimidazole (2-BzBIM) were derived from the standard molar enthalpies of combustion, at T = 298.15 K, measured by static bomb calorimetry, and the standard molar enthalpy of sublimation, at T = 298.15 K, measured by Calvet microcalorimetry in the case of 2-phenylbenzimidazole or derived from the variation of the vapour pressures, determined by the Knudsen effusion technique, with temperatures between (393 and 412) K for 2-benzylbenzimidazole. Heat capacities, in the temperature ranges from (268.15 to 322.10) K for 2-phenylbenzimidazole and (270.15 to 316.02) K for 2-benzylbenzimidazole, were also measured with a differential scanning calorimeter.
Compounds
# Formula Name
1 CO2 carbon dioxide
2 N2 nitrogen
3 H2O water
4 O2 oxygen
5 C13H10N2 2-phenylbenzimidazole
6 C14H12N2 bendazol
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
  • Mass density, kg/m3 ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • Pycnometric method
  • 1
  • POMD
  • 5
  • Molar heat capacity at constant pressure, J/K/mol ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • SDSC:UFactor:2
  • 40
  • POMD
  • 5
  • Molar enthalpy, kJ/mol ; Gas
  • Temperature, K; Gas
  • Pressure, kPa; Gas
  • Gas
  • Calvet microcalorimetry
  • 1
  • POMD
  • 6
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 6
  • Mass density, kg/m3 ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • Pycnometric method
  • 1
  • POMD
  • 6
  • Molar heat capacity at constant pressure, J/K/mol ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • SDSC:UFactor:2
  • 37
  • POMD
  • 6
  • Vapor or sublimation pressure, kPa ; Crystal
  • Temperature, K; Crystal
  • Crystal
  • Gas
  • Calculated from knudsen effusion weight loss
  • 7
  • RXND
  • 5
  • 1
  • 2
  • 3
  • 4
  • Specific internal energy of reaction at constant volume, J/g
  • Static bomb calorimetry
  • 1
  • RXND
  • 6
  • 1
  • 2
  • 3
  • 4
  • Specific internal energy of reaction at constant volume, J/g
  • Micro-bomb calorimetry
  • 1