| Names | |
|---|---|
| IUPAC name Tribromopraseodymium | |
| Systematic IUPAC name Praseodymium(III) bromide | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.033.524 |
| EC Number |
|
| |
| |
| Properties | |
| PrBr3 | |
| Molar mass | 380.62 g/mol |
| Appearance | Green crystalline solid |
| Density | 5.28 g/cm3 |
| Melting point | 691 °C (1,276 °F; 964 K)[2] Some sources say 693 °C[1] |
| Boiling point | 1,547 °C (2,817 °F; 1,820 K)[1] |
| Structure | |
| Tricapped trigonal prismatic | |
| 9 | |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards | Irritation |
| GHS labelling: | |
 | |
| Warning | |
| H315,H319 | |
| P261,P280,P305+P351+P338 | |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Praseodymium(III) bromide is a crystalline compound of onepraseodymium atom and threebromine atoms.[2][3]
Praseodymium(III) bromide is a green solid at room temperature.[2][1]It is usually handled as a powder.
Praseodymium(III) bromide's molecular weight is 380.62 g.[2][3][4][5] Praseodymium bromide has a density of 5.28 g/cm2.[6][5]
PrBr3 adopts theUCl3 crystal structure.[7] The praseodymium ions are 9-coordinate and adopt atricapped trigonal prismatic geometry.[8] The praseodymium–bromine bond lengths are 3.05 Å and 3.13 Å.[9]
Praseodymium(III) bromide ishygroscopic.[4] Praseodymium(III) bromide has anoxidation number of 3.[1]
Praseodymium(III) bromide can cause skin irritation (H315/R38), eye irritation (H319/R36), and that breathing dust/fume/gas/mist/vapours/spray of Praseodymium(III) bromide should be avoided (P261/S23), that one should wash hands thoroughly after handling (P264), one should wear protective gloves and clothes clothing, and wear eye protection and face protection (P280/S36/S37/S39), and that if one gets Praseodymium(III) bromide in their eyes, that they should wash their eyes cautiously for several minutes, removing contact lenses if possible (P305).[10]