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The study of the thermal dissociation processes of compounds of the type MoO2(C6H5CONHO)2.nA

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Abstract

Thermal dissociation processes of compounds with the composition MoO2(C6H5CONHO)2.nA (A-polar organic solvent: alcohols, aldehydes, ketones, organic acids) were investigated. Kinetics of dissociation was studied in a flow reactor, the values of activation energy and preexponential factor were calculated. The influence of a solvent nature, of the length of included molecules and of the type of crystalline lattice was studied. The sequence of kinetic stability was obtained. It corresponds to the sequence of solvent activity with respect to H-binding up with the complex. For the series of alcohols nonmonotonous dependence of kinetic parameters on the length of chain (with the division into two groups: with even and oddn) was obtained. For all the compounds studied a compensation relationship is observed (lgA=aE+b).

Zusammenfassung

Es wurden thermische DissoziationsvorgÄnge von Verbindungen der Zusammensetzung MoO2(C6H5CONHO)2 nA (mitA=polares organisches Lösungsmittel: Alkohole, Aldehyde, Ketone, organische SÄuren) untersucht. Die Dissoziationskinetik wurde in einem Durchlaufreaktor untersucht, die Werte für Aktivierungsenergie und prÄexponentiellen Faktor berechnet. Es wurde weiterhin der Einflu\ von der Art des Lösungsmittels, von der LÄnge der beteiligten Moleküle und vom Kristallgittertyp untersucht sowie eine Reihenfolge bezüglich der kinetischen StabilitÄt ermittelt. Diese stimmt mit der Reihenfolge der LösungsmittelaktivitÄt bezüglich der H-Bindung zum Komplex überein. Für die Alkoholreihen (zwei Reihen: mit geradem bzw. ungerademn) wurde keine sich monoton mit der analogen Reihe verÄndernde AbhÄngigkeit der kinetischen Parameter von der KettenlÄnge beobachtet. Für alle untersuchten Verbindungen wurde eine Kompensationsgleichung (lgA=aE+b) beobachtet.

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Authors and Affiliations

  1. Institute of Inorganic Chemistry, Siberian Department of The Academy of Sciences of The U.S.S.R., Novosibirsk, USSR

    V. A. Logvinenko & G. V. Gavrilova

  2. Institute of Chemistry, The Academy of Sciences of the Uz.S.S.R., Tashkent, USSR

    L. K. Kim, Kh. T. Sharipov & T. A. Azizov

Authors
  1. V. A. Logvinenko
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  2. G. V. Gavrilova
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  3. L. K. Kim
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  4. Kh. T. Sharipov
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  5. T. A. Azizov
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Logvinenko, V.A., Gavrilova, G.V., Kim, L.K. et al. The study of the thermal dissociation processes of compounds of the type MoO2(C6H5CONHO)2.nA. Journal of Thermal Analysis 36, 1393–1399 (1990). https://doi.org/10.1007/BF01914062

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  • DOI: https://doi.org/10.1007/BF01914062

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