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Chemical compound From Wikipedia, the free encyclopedia
Praseodymium(III) bromide is a crystalline compound of one praseodymium atom and three bromine atoms.[1][3]
Names | |
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IUPAC name
Tribromopraseodymium | |
Systematic IUPAC name
Praseodymium(III) bromide | |
Identifiers | |
3D model (JSmol) |
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ChemSpider | |
ECHA InfoCard | 100.033.524 |
EC Number |
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PubChem CID |
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CompTox Dashboard (EPA) |
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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)[1] Some sources say 693 °C[2] |
Boiling point | 1,547 °C (2,817 °F; 1,820 K)[2] |
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 their standard state (at 25 °C [77 °F], 100 kPa).
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Praseodymium(III) bromide is a green solid at room temperature.[1][2] It is usually handled as a powder.
Praseodymium(III) bromide's molecular weight is 380.62 g.[1][3][4][5] Praseodymium bromide has a density of 5.28 g/cm2.[6][5]
PrBr3 adopts the UCl3 crystal structure.[7] The praseodymium ions are 9-coordinate and adopt a tricapped trigonal prismatic geometry.[8] The praseodymium–bromine bond lengths are 3.05 Å and 3.13 Å.[9]
Praseodymium(III) bromide is hygroscopic.[4] Praseodymium(III) bromide has an oxidation number of 3.[2]
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]
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