| Names | |
|---|---|
| Systematic IUPAC name Polonium dibromide | |
| Identifiers | |
3D model (JSmol) | |
| |
| |
| Properties | |
| PoBr2 | |
| Molar mass | 369.791 g mol−1 |
| Appearance | purple-brown crystalline solid[1][2] |
| Melting point | 270 °C (518 °F; 543 K) (decomposes)[1][2] (sublimes at 110 °C)[2] |
| Solubility | soluble inhydrobromic acid andketones[2] |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Polonium dibromide (also known aspolonium(II) bromide) is a chemical compound with the formulaPoBr2. This salt is a purple-brown crystalline solid at room temperature.[1][2] It sublimes (decomposing slightly) at 110 °C/30μ and decomposes when melted innitrogen gas at 270–280 °C.[2]
Polonium dibromide may be prepared by:
Polonium dibromide forms purple solutions inhydrobromic acid (prepared similarly to solutions ofpolonium dichloride) andketones, although the latter are rapidly oxidised to polonium(IV). Solid polonium dibromide is rapidlyreduced to metallic polonium upon reaction withammonia.[2]
