Neodymium(III) bromide
Chemical compound
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Neodymium(III) bromide is an inorganic salt of bromine and neodymium the formula NdBr3. The anhydrous compound is an off-white to pale green solid at room temperature, with an orthorhombic PuBr3-type crystal structure.[6][7] The material is hygroscopic[8][9] and forms a hexahydrate in water (NdBr3· 6H2O), similar to the related neodymium(III) chloride.[10]
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| Names | |
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| IUPAC name
Neodymium(III) bromide | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.033.528 |
| EC Number |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| NdBr3 | |
| Molar mass | 383.95g (anhydrate) 492.05 (hexahydrate) |
| Appearance | Off-white to pale green powder |
| Density | 5.3 g/cm3 |
| Melting point | 684 °C (1,263 °F; 957 K)[1] |
| Boiling point | 1,540 °C (2,800 °F; 1,810 K)[2] |
| Structure | |
| Bicapped trigonal prismatic[3] | |
| 8[3] | |
| Hazards | |
| GHS labelling: | |
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| Warning[4] | |
| H315, H319, H335[4] | |
| P261, P280, P304+P340, P305+P351+P338, P405, P501[4][5] | |
| Safety data sheet (SDS) | N-MSDS0052 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Preparation
The direct reaction of neodymium with bromine can create neodymium(III) bromide:
- 2Nd + 3Br2 → 2NdBr3
In the presence of carbon, neodymium(III) oxide reacts with carbon tetrabromide to produce neodymium(III) bromide.[11]
Structure
Neodymium(III) bromide adopts the plutonium(III) bromide crystal structure.[12] The neodymium ions are 8-coordinate and adopt a bicapped trigonal prismatic geometry.[13] The neodymium–bromine bond lengths are 3.07 Å and 3.09 Å.[14]