Complexes of acid amides with polar aprotic solvents. II. Thermal analysis of the complexes of bis(N-phenyl)-pyromellitic acid amide with dimethylformamide,dimethylacetamide, N-methylpyrrolidone and dimethylsulfoxide |
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Authors: | S A Dauengauer Yu N Sazanov L A Shibaev T M Bulina N G Stepanov |
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Institution: | (1) Institute of Macromolecular Compounds of the Academy of Sciences of the U.S.S.R., Leningrad |
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Abstract: | The synthesis of solid complexes of bis(N-phenyl)-pyromellitic acid amide (PMA) with aprotic solvents (dimethylformamide, dimethylacetamide,N-methylpyrrolidone and dimethylsulfoxide) and their thermal analysis (evolved gas analysis using mass spectroscopy, and thermogravimetry) is described. In all cases, the composition of the complexes was found to be 1PMA: 2 solvent. The activation energy of the decomposition process of the complexes was determined from TG data. The values found were between 40 and 80 kJ/mol.
Zusammenfassung Es wird die Synthese der festen Komplexe von Bis(N-phenyl)-pyro-mellithsäureamid (PMA) mit aprotischen Lösungsmitteln (Dimethylformamid, Dimethylacetamid, N-Methylpyrrolidon und Dimethylsulfoxid) und deren thermische Analyse (massenspektrometrische Analyse der gebildeten Gase und Thermogravimetrie) beschreiben. In allen untersuchten Komplexen betrug das Zahlenverhältnis von PMA- zu Lösungsmittelmolekülen 2 1. Die für die Zersetzung der Komplexe aufzubringenden Aktivierungsenergien wurden aus TG-Daten bestimmt. Die ermittelten Werte lagen zwischen 40 und 80 kJ·mol–1.
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![ocy](/content/l07552776wpl43vq/xxlarge1086.gif) , ![kcy](/content/l07552776wpl43vq/xxlarge1082.gif) ![ocy](/content/l07552776wpl43vq/xxlarge1086.gif) ![tcy](/content/l07552776wpl43vq/xxlarge1090.gif) ![ocy](/content/l07552776wpl43vq/xxlarge1086.gif) ![rcy](/content/l07552776wpl43vq/xxlarge1088.gif) ![ycy](/content/l07552776wpl43vq/xxlarge1099.gif) ![lcy](/content/l07552776wpl43vq/xxlarge1083.gif) ![iecy](/content/l07552776wpl43vq/xxlarge1077.gif) ![zhcy](/content/l07552776wpl43vq/xxlarge1078.gif) ![acy](/content/l07552776wpl43vq/xxlarge1072.gif) ![pcy](/content/l07552776wpl43vq/xxlarge1087.gif) ![rcy](/content/l07552776wpl43vq/xxlarge1088.gif) ![iecy](/content/l07552776wpl43vq/xxlarge1077.gif) ![dcy](/content/l07552776wpl43vq/xxlarge1076.gif) ![lcy](/content/l07552776wpl43vq/xxlarge1083.gif) ![acy](/content/l07552776wpl43vq/xxlarge1072.gif) 40–80 ![kcy](/content/l07552776wpl43vq/xxlarge1082.gif) /![mcy](/content/l07552776wpl43vq/xxlarge1084.gif) ![ocy](/content/l07552776wpl43vq/xxlarge1086.gif) ![lcy](/content/l07552776wpl43vq/xxlarge1083.gif) .
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