Neodymium tungstate
| Names | |
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| Other names
Neodymium(III) wolframate
Neodymi(III) tungstate Neodymium wolframate | |
| Identifiers | |
3D model (JSmol)
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| ECHA InfoCard | 100.034.376 |
| EC Number |
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PubChem CID
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| Properties | |
| Nd2(WO4)3 | |
| Molar mass | 1031,9968 g/mol (anhydrous) 1194,13432 g/mol (nonahydrate) |
| Appearance | light purple crystals[1] |
| Density | 7,02 g/cm3 |
| Melting point | 1,135 °C (2,075 °F; 1,408 K) |
| 21 mg/100 mL (20 °C) 27 mg/100 mL (100 °C) | |
| Related compounds | |
Other anions
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Neodymium chromate Neodymium molybdate |
Other cations
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Praseodymium tungstate Promethium tungstate Samarium tungstate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Neodymium tungstate is an inorganic compound, a salt of neodymium and tungstic acid with the chemical formula Nd2(WO4)3. It forms hydrated light purple crystals[1] that are slightly soluble in water.
Preparation
[edit] |
Reacting neodymium (III) oxide and tungsten (VI) oxide at 1000 °C would produce anhydrous neodymium tungstate:
- Nd2O3 + 3 WO3 → Nd2(WO4)3
- The nonahydrate could be produced by the reaction of sodium tungstate and neodymium (III) nitrate:
- 3 Na2WO4 + 2 Nd(NO3)3 → Nd2(WO4)3·9H2O↓ + 6 NaNO3
Properties
[edit]Neodymium tungstate forms the crystal of a monoclinic crystal system, with space group A 2/a, lattice constants a = 1.151 nm, b = 1.159 nm, c = 0.775 nm and β = 109.67 °.[2] It is insoluble in ethanol and acetone and sparingly soluble in water. It forms the nonahydrate Nd2(WO4)3·9H2O.
References
[edit]- ^ a b Villars, Pierre; Cenzual, Karin; Gladyshevskii, Roman (2017-07-24). Handbook. Walter de Gruyter GmbH & Co KG. ISBN 978-3-11-043655-6.
- ^ Ternary Compounds, Organic Semiconductors. Vol. 41E. Landolt-Börnstein. 2000. pp. 1–5. ISBN 978-3-540-66781-0.
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