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Monatshefte für Chemie / Chemical Monthly

, Volume 119, Issue 4, pp 407–424 | Cite as

Preparation and properties of yttrium, lanthanum and lanthanidep-nitrobenzoates

  • Wiesława Ferenc
  • Wanda Brzyska
Anorganische Und Physikalische Chemie

Abstract

The conditions of the formation of rare earth elementp-nitrobenzoates were studied and their quantitative composition and solubilities in water at 298 K were determined (their solubilities are of the order of 10−3 mol dm−3). The IR and X-ray spectra for the prepared complexes and the dehydrated rare earthp-nitrobenzoates were recorded. All obtained complexes are crystalline compounds. The conditions of thermal decomposition of the complexes were also studied. It was found that on heating above 573 K the complexes decompose explosively and undergo a melting process at the same time. Therefore the thermal decomposition for complexes being investigated was carried out in the temperature range 273–573 K. From the obtained results it follows that during the dehydration process no transformation of the nitro group to nitrito occurs.

Keywords

Complexes Lanthanoids 

Herstellung und Eigenschaften von Y, La und Lanthaniden-p-nitrobenzoaten

Zusammenfassung

Die Bedingungen zur Darstellung von Y-, La- und Lanthaniden-p-nitrobenzoaten wurden untersucht. Ihre quantitative Zusammensetzung und ihre Wasserlöslichkeit bei 298 K wurden bestimmt (die Löslichkeit ist in der Größenordnung 10−3 mol dm−3). Die Infrarot- und Röntgenspektren der erhaltenen Komplexe sowie derp-Nitrobenzoate der seltenen Erden nach der Dehydratisierung wurden gemessen und dabei festgestellt, daß es sich um kristalline Verbindungen handelt. Das thermische Verhalten der erhaltenen Komplexe wurde untersucht: Sie zerfallen über 573 K explosiv und schmelzen zugleich. Der thermische Zerfall der erhaltenenp-Nitrobenzoate der seltenen Erden wurde im Temperaturbereich von 273–573 K untersucht. Es wurde festgestellt, daß die Y-, La- und Lanthaniden-p-nitrobenzoate bei Temperaturzunahme oder im Dehydratisierungsprozeß keiner Umgruppierung in entsprechende Nitritoverbindungen unterliegen.

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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • Wiesława Ferenc
    • 1
  • Wanda Brzyska
    • 1
  1. 1.Department of Inorganic and General Chemistry, Institute of ChemistryMarie Curie-Skłodowska UniversityLublinPoland

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