2017
DOI: 10.22606/mocr.2017.22006
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Thermodynamic Characteristics of Ethyl-2-cyano-3-(furan-2-yl)-prop-2-enoate Derivatives

Abstract: Abstract. Using bomb calorimetry and Knudsen effusion methods the enthalpic characteristics in condensed state of ethyl-2-cyano-3-(furan-2-yl) prop-2-enoate derivatives were experimentally determined. The values of the enthalpies of formation in the gas state of investigated esters were calculated taking into account the values of the enthalpies of sublimation adjusted to 298K. From obtained thermochemical values we defined new group contributions which can be added to the Benson's additive scheme. Using these… Show more

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Cited by 6 publications
(8 citation statements)
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“…Particular attention should be paid to compounds 20 , 27 , 28 , 31 , and 34 – 39 , for which the discrepancies with calculated values range from 29 to 72 kJ·mol –1 . Experimental data of these compounds were obtained in the same research group, ,,, and the results may contain the systematic errors. For only one compound, 2-furanacrylic acid ( 20 ), experimental measurements were also carried out in other work by Ribeiro da Silva and Amaral .…”
Section: Resultsmentioning
confidence: 99%
“…Particular attention should be paid to compounds 20 , 27 , 28 , 31 , and 34 – 39 , for which the discrepancies with calculated values range from 29 to 72 kJ·mol –1 . Experimental data of these compounds were obtained in the same research group, ,,, and the results may contain the systematic errors. For only one compound, 2-furanacrylic acid ( 20 ), experimental measurements were also carried out in other work by Ribeiro da Silva and Amaral .…”
Section: Resultsmentioning
confidence: 99%
“…The Washborn correction brings the value of U В to standard conditions, since the value of U В was obtained as a result of the experiment and belongs to the isothermal combustion reaction of the test substance under the conditions contained in the bomb. This amendment, according to the recommendations given in [21], was calculated according to the so-called simplified Washborn equation, equation (3):…”
Section: Results Of Experimental Determination Of Combustion Energies...mentioning
confidence: 99%
“…The presented work is a continuation of thermodynamic studies of arylfuran derivatives, the results of which were published in [21][22][23].…”
Section: Enthalpies Of Combustion Of Matter (mentioning
confidence: 99%
“…They were calculated using reliable gaseous state formation enthalpies of the compounds. The contributions of the groups C d –(C d ) 2 (O), C–(C b ) 2 (NO 2 ) and C d –(C d )(O)(C b ) which are absent in the additive scheme were defined from the gaseous state formation enthalpy of vinylfuran [27], nitrobenzene [27] and ethyl-2-cyano-3-(furan-2-yl)-prop-2-enoate [18]. In addition, we had to use the contribution of the whole fragment (C d )–CH=N–OH for calculations.…”
Section: Resultsmentioning
confidence: 99%
“…The correction (Z) of 9 kJ/mol was taken from [31]. The same correction was used to determine the contribution of the group C d –(C d )(O)(C B ) from the formation enthalpy of 3-substituted 2-cyano-acrylic acid ethyl ester [18]. As a result of the system solution, the correction terms (kJ/mol) were defined: X = − 30.7, Y = − 29.5 It is clear that the corrections were determined for a small set of substances, and will be defined more exactly as additional experimental material is gained.…”
Section: Resultsmentioning
confidence: 99%