Polonium (IV) chloride
| Structural formula | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No drawing available | |||||||||||||
| General | |||||||||||||
| Surname | Polonium (IV) chloride | ||||||||||||
| other names |
Polonium tetrachloride |
||||||||||||
| Molecular formula | PoCl 4 | ||||||||||||
| Brief description |
light yellow crystals |
||||||||||||
| External identifiers / databases | |||||||||||||
|
|||||||||||||
| properties | |||||||||||||
| Molar mass | 350.79 g mol −1 | ||||||||||||
| Physical state |
firmly |
||||||||||||
| Melting point |
300 ° C |
||||||||||||
| boiling point |
390 ° C |
||||||||||||
| solubility |
Soluble in water |
||||||||||||
| Hazard and safety information | |||||||||||||
 Radioactive |
|||||||||||||
|
|||||||||||||
| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | |||||||||||||
Polonium (IV) chloride , PoCl 4 is a chemical compound of polonium from the group of chlorides .
Extraction and presentation
The compound can result from the reaction of polonium (IV) oxide and phosphorus pentachloride or thionyl chloride or can be produced by halogenation with hydrochloric acid .
properties
The salt changes color at higher temperatures. It turns straw yellow at the melting point, scarlet red at the boiling point and blue-green at 500 ° C. From a temperature of 200 ° C, the polonium (IV) chloride decomposes into the divalent polonium (II) chloride . This creates chlorine . Polonium (IV) chloride is able to form halogen complexes. Possible polonium chloride complexes would be PoCl 5 - or PoCl 6 2− . It dissolves well in thionyl chloride and moderately in ethanol and acetone . It can be dissolved in water by hydrolysis . The chloride is also soluble in hydrochloric acid.
Individual evidence
- ^ A b c d e A. F. Holleman, Egon Wiberg, Nils Wiberg: Inorganic Chemistry . Academic Press, 2001, ISBN 0-12-352651-5 , pp. 549 .
- ^ HJ Emeléus, AG Sharpe: Advances in Inorganic Chemistry and Radiochemistry . tape 4 . Academic Press, 1962, ISBN 0-08-057853-5 , pp. 214 .
- ↑ The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.
- ^ D'Ans-Lax, paperback for chemists and physicists, 4th edition, volume 3, Springer Verlag 1998, ISBN 3-540-60035-3