Polonium (II) chloride
| Crystal structure | ||||||||||
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| No drawing available | ||||||||||
| Crystal system | ||||||||||
| Space group |
Pmmm (No. 47) |
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| Lattice parameters |
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| General | ||||||||||
| Surname | Polonium (II) chloride | |||||||||
| other names |
Polonium dichloride |
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| Ratio formula | PoCl 2 | |||||||||
| Brief description |
ruby red solid |
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| properties | ||||||||||
| Molar mass | 279.88 g mol −1 | |||||||||
| Physical state |
firmly |
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| density |
6.50 g cm −3 |
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| Sublimation point |
190 ° C |
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| Hazard and safety information | ||||||||||
 Radioactive |
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | ||||||||||
Polonium (II) chloride , PoCl 2 , is the divalent chloride from the group of polonium halides .
Extraction
The decomposition of polonium (IV) chloride at 150 ° C gives rise to polonium (II) chloride.
properties
Physical Properties
The compound's crystal system is orthorhombic . It has the space group Pmmm (space group no. 47) with the lattice parameters a = 3.66 Å , b = 4.34 Å and c = 4.49 Å.
Chemical properties
Polonium dichloride, like polonium (IV) bromide and polonium (IV) iodide, is hygroscopic . The polonium is oxidized to the tetravalent Po 4+ by hydrogen peroxide . Polonium (II) chloride reacts with bromine vapors to form pink polonium dichlorodibromide PoCl 2 Br 2 .
Individual evidence
- ↑ a b P. E. Figgins: The Radiochemistry of Polonium . National Academies, 1961, pp. 13 .
- ^ A b H. J. Emeléus, AG Sharpe: Advances in Inorganic Chemistry and Radiochemistry . tape 4 . Academic Press, 1962, ISBN 0-08-057853-5 , pp. 216 .
- ↑ a b Jane E. Macintyre: Dictionary of Inorganic Compounds . CRC Press, 1992, ISBN 0-412-30120-2 , pp. 2900 .
- ↑ 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.
- ^ M. Schmidt, W. Siebert, KW Bagnall: The Chemistry of Sulfur, Selenium, Tellurium and Polonium: Pergamon Texts in Inorganic Chemistry . tape 15 . Elsevier, 2013, ISBN 1-4831-5865-9 , pp. 960-962 .
- ↑ KW Bagnall, RWM d'Eye, JH Freeman: The polonium halides. Part I. Polonium chlorides. Journal of the Chemical Society, pp. 2320-2326 .