Thermochemistry of formation and phase transitions of substituted thiophenes at 298.15 K

Nagrimanov, Ruslan N.; Zaitsau, Dzmitry H.; ABDULLAH, RAWAND  Samad; Blokhin, Andrey V.; Solomonov, Boris N.

doi:10.1016/j.jct.2023.107123

Cited by 1 publication

(2 citation statements)

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“…The nitrogen flow stream in a definite flow rate passed through the tube at selected temperature T i . Definitely, the amount of saturated vapor pressure of the sample condensed in the cold trap was measured at definite time to know the volume V N2 transported nitrogen gas at the specific rate according to general gas law, the procedure described elsewhere [12], [15], [27], [28] [29].…”

Section: Transpiration Methodsmentioning

confidence: 99%

“…Therefore, the vapor pressure to temperature dependency, vaporization/sublimation enthalpy, entropy change and Gibbs energy change values were determined by transpiration method in this work for the 2-chloroquinoline compound at the selected temperature and at suitable nitrogen flow rate to obtain the amount of evaporated vapor over the sample (table 3). Vapor pressure to temperature relation data over 2-chloroquinonline was measured for the first time and its thermochemical properties at reference temperature 298.15 K were determined temperature [29]. The uncertainties of vaporization/ sublimation enthalpies combined in literature values assessed.…”

Section: Evaporation Enthalpymentioning

confidence: 99%

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Phase Transition Thermodynamic Properties Of 2-Methylquinoline, 2-Chloroquinoline And 2-Phenylquinoline

ABDULLAH,

SOLOMONOV

2023

International Journal of Thermodynamics

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Derivatives of quinoline are widely utilized in both industries and in healthcare. To understand the quinolines' quality and stability in usage, it is crucial to study their phase transition chemical thermodynamic characteristics. In this work, the phase transition thermodynamic characters of 2-methylquinoline (quinaldine), 2-chloroquinoline, and 2-phenylquinoline were investigated. Moreover, the sublimation/vaporization enthalpy of the compounds were determined the solution calorimetry-additivity scheme approach at 298.15 K. The solution calorimetry was applied to measure solution enthalpies of the compounds in benzene solvent at 298.15 K. While, the solvation enthalpy of the compounds were calculated additivity scheme approach. In addition, the transpiration method applied to estimate vapor pressure to temperature dependency to 2-Chloroquinoline. In consequence, the vapor pressure values with respect to temperature variation was determined to 2-Chloroquinoline compound for the first time. As a result, the phase transition chemical thermodynamic properties; enthalpy, entropy, and Gibbs energy for 2-methylquinoline, 2-chloroquinoline and 2-phenylquinoline were determined from crystalline/liquid to gas phase. Furthermore, in this work the thermochemical characteristics values of the studied compounds exhibited higher accuracy to those in literature data. Finally, the phase transition thermodynamically studied on 2-position of the quinoline compound, where it substituted to methyl, chloro and phenyl groups.

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