- Source: Caesium oxalate
Caesium oxalate (standard IUPAC spelling), or dicesium oxalate, or cesium oxalate (American spelling) is a chemical compound with the chemical formula Cs2C2O4. It is a caesium salt of oxalic acid. It consists of caesium cations Cs+ and oxalate anions C2O2−4.
Preparation
Caesium oxalate can be prepared by passing carbon monoxide and carbon dioxide over caesium carbonate at 380 °C:
Cs2CO3 + CO → Cs2C2O4
Other alkali carbonates do not undergo transformation to oxalate.
Caesium carbonate can react with oxalic acid in aqueous solution to give caesium oxalate.
Cs2CO3 + H2C2O4·2H2O → Cs2C2O4·H2O + CO2 + 2 H2O
Chemical Reactions
Caesium oxalate can be reduced back into caesium carbonate and carbon monoxide by thermal decomposition.
Cs2C2O4 → Cs2CO3 + CO
Double salts
Compounds that contain caesium and another element in addition to the oxalate anion are double salts of caesium and oxalate. The oxalate may form a complex with a metal that can make a salt with caesium.
Examples include:
Mixed anion compounds containing caesium, oxalate and another anion also exist, such as the uranyl sulfate above, and caesium bis(oxalato)borate (CsBOB) (Cs[B(C2O4)2]).
References
Kata Kunci Pencarian:
- Kamus rumus kimia
- Neptunium
- Caesium oxalate
- Oxalate
- Caesium carbonate
- Caesium
- Rubidium oxalate
- Francium
- Solubility table
- Glossary of chemical formulae
- List of CAS numbers by chemical compound
- Francium compounds
