Thermodynamic Properties of 6-Methyl-2-oxo-4-aryl-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid Esters

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dc.citation.epage283
dc.citation.issue3
dc.citation.spage277
dc.contributor.affiliationLviv Polytechnic National University
dc.contributor.affiliationIvan Franko National University of Lviv
dc.contributor.affiliationFrantsevich Institute for Problems of Materials Science NASU
dc.contributor.authorKlachko, Olena
dc.contributor.authorMatiychuk, Vasyl
dc.contributor.authorSobechko, Iryna
dc.contributor.authorSerheyev, Valentyn
dc.contributor.authorTishchenko, Nadiya
dc.coverage.placenameЛьвів
dc.coverage.placenameLviv
dc.date.accessioned2024-01-09T08:54:29Z
dc.date.available2024-01-09T08:54:29Z
dc.date.created2020-03-16
dc.date.issued2020-03-16
dc.description.abstractМетодом бомбової калориметрії експери-ментально одержані енергії згоряння естерів: етил 6-метил-2-оксо-4-феніл-1,2,3,4-тетрагідропіримідин-5-карбоксилат; етил 6-метил-4-(4-метилфеніл)- 2-оксо-1,2,3, 4-тетрагідропі-римідин-5-карбоксилат; етил 4-(4-метоксифеніл)-6-метил-2-оксо-1,2,3, 4-тетрагідропіримідин-5-карбоксилат; етил 4-(2-метоксифеніл)-6-метил-2-оксо-1,2,3, 4-тетрагідропіримідин-5-карбоксилат. За експериментальними даними розраховані ентальпії згоряння та ентальпії утворення в твердому стані. Дериватографічним методом проведено аналіз досліджених речовин в діапазоні температур 483,0‒577,5 К. За даними диференційно-термічного аналізу розраховано величини ен-тальпій плавлення, випаровування та сублімації. За одержаними даними розраховані ентальпії утворення досліджених речовин в газоподібному стані. Продемонстровано можливість використання адитивної схеми Бенсона для розрахунку ентальпії утворення.
dc.description.abstractCombustion energies of esters (ethyl 6-methyl-2-oxo-4-phenyl-1, 2,3,4-tetrahydropyrimidine-5-carboxylate; ethyl 6-methyl-4-(4-methylphenyl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate; ethyl 4-(4-methoxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate and ethyl 4-(6-methoxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate) were experimentally obtained using a bomb calorimetry. According to the experimental data, the enthalpies of combustion and the enthalpies of formation in a solid state were calculated. Derivative analysis was used to investigate the compounds within the temperature range of 483.0–577.5 K. The enthalpies of fusion, vaporization and sublimation were calculated using the results of the differential thermal analysis. According to the obtained data, the enthalpies of formation of the investigated compounds in the gaseous state were calculated. The possibility of using the Benson additive scheme to calculate the enthalpy of formation is demonstrated.
dc.format.extent277-283
dc.format.pages7
dc.identifier.citationThermodynamic Properties of 6-Methyl-2-oxo-4-aryl-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid Esters / Olena Klachko, Vasyl Matiychuk, Iryna Sobechko, Valentyn Serheyev, Nadiya Tishchenko // Chemistry & Chemical Technology. — Lviv : Lviv Politechnic Publishing House, 2020. — Vol 14. — No 3. — P. 277–283.
dc.identifier.citationenThermodynamic Properties of 6-Methyl-2-oxo-4-aryl-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid Esters / Olena Klachko, Vasyl Matiychuk, Iryna Sobechko, Valentyn Serheyev, Nadiya Tishchenko // Chemistry & Chemical Technology. — Lviv : Lviv Politechnic Publishing House, 2020. — Vol 14. — No 3. — P. 277–283.
dc.identifier.doidoi.org/10.23939/chcht14.03.277
dc.identifier.urihttps://ena.lpnu.ua/handle/ntb/60664
dc.language.isoen
dc.publisherВидавництво Львівської політехніки
dc.publisherLviv Politechnic Publishing House
dc.relation.ispartofChemistry & Chemical Technology, 3 (14), 2020
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dc.relation.urihttps://doi.org/10.1021/jm990612y
dc.relation.urihttps://doi.org/10.1126/science.286.5441.971
dc.relation.urihttps://doi.org/10.1021/jo00110a021
dc.relation.urihttps://doi.org/10.3998/ark.5550190.0013.103
dc.relation.urihttps://doi.org/10.1134/S0036024416030274
dc.relation.urihttps://doi.org/10.1134/S0036024415030279
dc.relation.urihttps://doi.org/10.1134/S1070427212040283
dc.relation.urihttps://doi.org/10.1134/S1070427211050284
dc.relation.urihttps://doi.org/10.1007/s00044-012-9987-z
dc.relation.urihttps://doi.org/10.23939/chcht11.04.397
dc.relation.urihttps://doi.org/10.1016/0021-9614(78)90050-2
dc.relation.urihttps://doi.org/10.23939/chcht10.01.027
dc.relation.urihttps://doi.org/10.7868/S0044453714120322
dc.rights.holder© Національний університет “Львівська політехніка”, 2020
dc.rights.holder© Klachko O., Matiychuk V., Sobechko I., Serheyev V., Tishchenko N., 2020
dc.subjectентальпія згоряння
dc.subjectентальпія утворення
dc.subjectентальпія плавлення
dc.subjectентальпія випаровування
dc.subjectентальпія сублімації
dc.subjectестери 6-метил-2-оксо-4-арил-1
dc.subject2
dc.subject3
dc.subject4-тетра-гідропіримідин-5-карбонових кислот
dc.subjectenthalpy of combustion
dc.subjectenthalpy of formation
dc.subjectenthalpy of fusion
dc.subjectenthalpy of vaporization
dc.subjectenthalpy of sublimation
dc.subject6-methyl-2-oxo-4-aryl-1
dc.subject2
dc.subject3
dc.subject4-tetrahydropyrimidine-5-carboxylic acid esters
dc.titleThermodynamic Properties of 6-Methyl-2-oxo-4-aryl-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid Esters
dc.title.alternativeТермодинамічні властивості естерів 6-метил-2-оксо-4-арил-1,2,3,4-тетрагідропіримідин-5-карбонових кислот
dc.typeArticle

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Chemistry & Chemical Technology. – 2020. – Vol. 14, No. 3