An unexpected triammine(oxalato)platinum(II) complex obtained from the aqueous solution of tetraammineplatinum(II) oxalate

An unexpected triammine(oxalato)platinum(II) complex obtained from the aqueous solution of... An unexpected complex, triammine(oxalato)platinum(II) in which oxalate anion acts as a monodentate ligand, was isolated in the process of recrystallizing [Pt(NH3)4](C2O4). The complex was presumably formed via the loss of one ammonia molecule from [Pt(NH3)4](C2O4), followed by the binding of oxalate from the outer coordination sphere. Single crystal X-ray diffraction study revealed that the Pt(II) atom was coordinated on a distorted square by three N atoms of the ammine molecules and one O atom of the oxalate ligand. The crystal packing was stabilized by moderate to strong hydrogen bonds formed between ammine, water molecules and O atoms of oxalate with d(N···O) in the range of 2.84(2)–3.29(2) Å, and d(O···O) in the range of 2.86(2)–3.37(2) Å. The complex underwent thermal decomposition at 200–231 °C in the nitrogen atmosphere, giving rise to Pt, NH3 and CO2. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

An unexpected triammine(oxalato)platinum(II) complex obtained from the aqueous solution of tetraammineplatinum(II) oxalate

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Publisher
Springer Netherlands
Copyright
Copyright © 2011 by Springer Science+Business Media B.V.
Subject
Chemistry; Inorganic Chemistry; Physical Chemistry; Catalysis
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-011-0358-z
Publisher site
See Article on Publisher Site

Abstract

An unexpected complex, triammine(oxalato)platinum(II) in which oxalate anion acts as a monodentate ligand, was isolated in the process of recrystallizing [Pt(NH3)4](C2O4). The complex was presumably formed via the loss of one ammonia molecule from [Pt(NH3)4](C2O4), followed by the binding of oxalate from the outer coordination sphere. Single crystal X-ray diffraction study revealed that the Pt(II) atom was coordinated on a distorted square by three N atoms of the ammine molecules and one O atom of the oxalate ligand. The crystal packing was stabilized by moderate to strong hydrogen bonds formed between ammine, water molecules and O atoms of oxalate with d(N···O) in the range of 2.84(2)–3.29(2) Å, and d(O···O) in the range of 2.86(2)–3.37(2) Å. The complex underwent thermal decomposition at 200–231 °C in the nitrogen atmosphere, giving rise to Pt, NH3 and CO2.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Aug 11, 2011

References

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