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Monatshefte für Chemie / Chemical Monthly

, Volume 119, Issue 11, pp 1189–1199 | Cite as

Crystal structures and thermal decomposition oftrans-Pd(Creat)2Cl2·2H2O andcis-Pt(Creat)2I2·3H2O

  • Paul T. Beurkens
  • Aurea Perales
  • Francisco J. Martín-Gil
  • J. Martín-Gil
Anorganische Und Physikalische Chemie

Abstract

New complexes of the formulaetrans-Pd(Creat)2Cl2·2H2O (I) andcis-Pt(Creat)2I2·3H2O (II) have been prepared and their structures and stabilities studied by X-ray diffraction and thermal analysis. Both compounds have a squareplanar geometry, the two Cl atoms and N1 creatinine atoms are coordinated to Pd intrans configuration, while in compoundII the I atoms and N1 atoms are coordinated incis configuration. In spite of the earlier differences, the TG and DTA curves of the complexes show that their stability is very similar. Since an extended hydrogen bond system is present in the crystals, especially inII, the possible consequences in biological media are discussed briefly.

Keywords

Creatinine Palladium(II) complexes Platinum(II) complexes Crystal structures Thermal analysis 

Kristallstrukturen und thermische Zersetzung vontrans-Pd(Creat)2Cl2·2H2O undcis-Pt(Creat)2I2·3H2O

Zusammenfassung

Es wurden neue Komplexe der Formelntrans-Pd(Creat)2Cl2·2H2O (I) undcis-Pt(Creat)2I2·3H2O (II) hergestellt und ihre Strukturen und Stabilitäten mittels Röntgenstrukturanalyse bzw, thermischer Analyse untersucht. Beide Komplexe haben quadratisch-planare Struktur, die zwei Cl-Atome und die N1-Creatinin-Atome sind an Pd intrans-Konfiguration koordiniert, währenddessen in VerbindungII die I-Atome und die N1-Atome incis-Konfiguration zueinander stehen. Trotz früherer Differenzen zeigen die TG- und DTA-Kurven der Komplexe, daß ihre Stabilitäten sehr ähnlich sind. Da besonders inII ein ausgedehntes Wasserstoffbindungssystem vorhanden ist, werden auch mögliche Konsequenzen bezüglich biologischer Wirksamkeit kurz diskutiert.

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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • Paul T. Beurkens
    • 1
  • Aurea Perales
    • 2
  • Francisco J. Martín-Gil
    • 3
  • J. Martín-Gil
    • 3
  1. 1.Crystallography Laboratory ToernooiveldNijmegenHolland
  2. 2.Crystallography DepartmentInstituto “Rocasolano”MadridSpain
  3. 3.Department of Inorganic Chemistry, ETSIIUniversity of ValladolidValladolidSpain

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