Potassium trans-[bis(oxalato)diaquacobaltate(II)] tetrahydrate: synthesis, structure, potentiometric and thermal studies

• Authors: Agnieszka Chylewska , Artur Sikorski , Aleksandra Dąbrowska , Lech Chmurzyński
• Languages of publication: EN

Abstracts

EN

The title compound, trans-K2[Co(C2O4)2(H2O)2]·4H2O, was synthesised, and characterised by elemental analysis. Acid dissociation constants for the complex were determined by potentiometric titration and calculated by STOICHIO program. The crystal structure of trans-K2[Co(C2O4)2(H2O)2]·4H2O was determined by X-ray diffraction studies. The asymmetric part of the unit cell contains one symmetric anion of oxalate and water molecule bound with Co(II) ion in crystallographic special position, one potassium cation and two molecules of water. Thermal properties of the complex were examined by thermogravimetric analysis (TGA). A decomposition mechanism is proposed on the basis of the results.

Keywords

EN

Cobalt(II) complex; Oxalate ligands; X-ray; Thermogravimetry; Potentiometry

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2013
• Volume: 11
• Issue: 1
• Pages: 8-15

Dates

published

1 - 1 - 2013

online

24 - 10 - 2012

Contributors

author

Agnieszka Chylewska

• University of Gdańsk

author

Artur Sikorski

• University of Gdańsk

author

Aleksandra Dąbrowska

• University of Gdańsk

author

Lech Chmurzyński

• University of Gdańsk

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Identifiers

DOI

10.2478/s11532-012-0129-8