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On the relationship between the structures of Cu(II) complexes and their chemical transformations

XVI. Thermal dehydration of some pentacoordinate aquacarboxylato Cu(II) complexes

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Abstract

The thermal dehydration of pentacoordinate complexes [Cu(maleinate)(H2O)] (I), [Cu2(citrate) (H2O)2] (II) and [Cu(phenoxyacetate)2(H2O3] (III) was investigated and correlated with the structural changes occurring during the dehydration. It was found that the activation parameters of the reactions do not follow the lengths of the split Cu−OH2 bonds. The lowestE a and lgA values were found for compound I, the highest ones for compound III. The most expressive changes of the anionic ligand binding mode take place during the dehydration of this compound.

Zusammenfassung

Die thermische Dehydratation der pentakoordinativen Komplexe [Cu(Maleinat)(H2O)] (I), [Cu2(Zitrat)(H2O)2] (II) und [Cu(Phenoxyacetat)2(H2O)3] (III) wurde untersucht und mit den Strukturveränderungen bei der Dehydratation in Korrelation gestellt. Man fand, da\ sich die Aktivierungsparameter der Reaktion nicht nach der Länge der Cu−OH2 Bindungen richten. Der niedrigsteE a -und lgA-ert ergab sich für die Verbindung I, der höchste für die Verbindung III. Die ausgeprägtesten änderungen der Art der anionischenLigandenbindung erfolgen bei der Dehydratation dieser Verbindung.

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Authors and Affiliations

  1. Department of Inorganic Chemistry, Slovak Technical University, Radlinského 9, 812 37, Bratislava, Slovakia

    H. Langfelderová & O. Hodúr

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  1. H. Langfelderová
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  2. O. Hodúr
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Langfelderová, H., Hodúr, O. On the relationship between the structures of Cu(II) complexes and their chemical transformations. Journal of Thermal Analysis 42, 973–979 (1994). https://doi.org/10.1007/BF02547119

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  • DOI: https://doi.org/10.1007/BF02547119

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