Thermodynamic properties of 5(nitrophenyl) furan-2-carbaldehyde isomers

Chemistry Central Journal

Volodymyr Dibrivnyi²  Iryna Sobechko³  Marian Puniak³  Yuriy Horak⁴  Mykola Obushak⁴  Yuriy Van-Chin-Syan³  Marshalek Andriy³  Nadiia Velychkivska¹ 

[1] Charles University in Prague, Ovocný trh 3-5, Prague 1 116 36, Czech Republic

[2] P. Kobylytsi str. 19/40, Lviv 79053, Ukraine

[3] National University “LvivPolytechnic”, S. Bandery Str.,12, Lviv 79013, Ukraine

[4] Ivan Franko National University of Lviv, Kyryla and Mefodiya Str., 6, Lviv 79005, Ukraine

关键词: Isomerisation enthalpy;    Sublimation enthalpy;    Vaporization enthalpy;    Formation enthalpy;    Combustion enthalpy;    Vapor pressure;    5(2-Nitrophenyl)-furan-2-carbaldehydes;   

Others  :  1234823
DOI  :  10.1186/s13065-015-0144-x

 received in 2015-04-30, accepted in 2015-11-23,  发布年份 2015

【 摘 要 】

Background

The aim of the current work was to determine thermo dynamical properties of 5(2-nitro phenyl)-furan-2-carbaldehyde, 5(3-nitro phenyl)-furan-2-carbaldehyde and 5(4-nitro phenyl)-furan-2-carbaldehyde.

Results

The temperature dependence of saturated vapor pressure of 5(2-nitro phenyl)-furan-2-carbaldehyde, 5(3-nitro phenyl)-furan-2-carbaldehyde and 5(4-nitro phenyl)-furan-2-carbaldehyde was determined by Knudsen’s effusion method. The results are presented by the Clapeyron–Clausius equation in linear form, and via this form, the standard enthalpies, entropies and Gibbs energies of sublimation and evaporation of compounds were calculated at 298.15 K. The standard molar formation enthalpies of compounds in crystalline state at 298.15 K were determined indirectly by the corresponding standard molar combustion enthalpy, obtained using bomb calorimetry combustion.

Conclusions

Determination of the thermodynamic properties for these compounds may contribute to solving practical problems pertaining optimization processes of their synthesis, purification and application and it will also provide a more thorough insight regarding the theoretical knowledge of their nature.

【 授权许可】

   
2015 Dibrivnyi et al.

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