Neptunium(III) fluoride
| Names | |
|---|---|
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IUPAC name
Neptunium(III) fluoride
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| Other names
Neptunium trifluoride
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| Identifiers | |
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3D model (JSmol)
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| Properties | |
| NpF3 | |
| Molar mass | 294 g/mol |
| Appearance | Purple solid |
| Structure | |
| Trigonal, hP8 | |
| P63/mmc, No. 194 | |
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a = 0.7129 nm, c = 0.7288 nm
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Lattice volume (V)
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0.32077 nm3 |
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Formula units (Z)
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6 |
| Thermochemistry | |
| 94 ± 3 J/mol·K | |
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Std molar
entropy (S |
131 ± 3 J/mol·K |
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Std enthalpy of
formation (ΔfH |
−1529 ± 8 kJ/mol |
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Gibbs free energy (ΔfG˚)
|
-1461 ± 8 kJ/mol |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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| Infobox references | |
Neptunium(III) fluoride or neptunium trifluoride is a chemical compound of neptunium and fluorine with the formula NpF3.
Neptunium(III) fluoride can be prepared by reacting neptunium dioxide with a gas mixture of hydrogen and hydrogen fluoride at 500 °C:
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