Abstract
The thermal decomposition characteristics of representatives of three classes of organoplatinum compounds have been examined by thermogravimetry. Substituted salicylato(1,2-diaminocyclohexane)platinum(II) compounds undergo thermal decomposition by sequential loss of first the salicylato ligand and then the amine ligand to afford a residue corresponding to the platinum content of the compound. The thermal decomposition of N-arylsalicylaldimino(1,2-diaminocyclohexane)platinum(II) nitrate is more complex, but is also characterized by two major weight losses. Thermal decomposition ofbis-(2-thiophenecarboxylato)platinum(II) is characterized by ligand fragmentation to generate a residual mass corresponding to the platinum content of the compound.
Zusammenfassung
Mittels Thermogravimetrie wurden die thermischen Zersetzungsmerkmale von Vertretern dreier Klassen von Organoplatinverbindungen untersucht. Substituierte Salicylato-(1,2-diaminocyclohexan)platin(II)-Verbindungen zersetzen sich thermisch, indem zuerst die Salicylatoliganden und anschließend die Aminliganden abgegeben werden, wobei ein Rest entsteht, der mit dem Platingehalt der Verbindung übereinstimmt. Die thermische Zersetzung von N-Arylsalicylaldimino(1,2-diaminocyclohexan)platin(II)-nitrat ist komplizierter, ist aber ebenfalls durch zwei größere Masseverluste gekennzeichnet. Die thermische Zersetzung von bis-(2-Thiophencarboxylato)platin(II) ist durch eine Ligandenfragmentation gekennzeichnet, nach der eine Restmasse erhalten wird, die mit dem Platingehalt der Verbindung identisch ist.
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Howell, B.A., Beholz, L.G. & Sastry, B.B.S. The thermal degradation characteristics of selected organoplatinum antitumor agents. Journal of Thermal Analysis 40, 395–403 (1993). https://doi.org/10.1007/BF02546607
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DOI: https://doi.org/10.1007/BF02546607