| Names | |
|---|---|
| IUPAC name Neptunium(III) fluoride | |
| Other names Neptunium trifluoride | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
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| Properties | |
| NpF3 | |
| Molar mass | 294 g/mol |
| Appearance | Purple solid[1] |
| Structure | |
| Trigonal,hP8[1] | |
| P63/mmc, No. 194[2] | |
a = 0.7129 nm,c = 0.7288 nm | |
Lattice volume (V) | 0.32077 nm3 |
Formula units (Z) | 6 |
| Thermochemistry | |
| 94 ± 3 J/mol·K[1] | |
Std molar entropy(S⦵298) | 131 ± 3 J/mol·K[1] |
Std enthalpy of formation(ΔfH⦵298) | −1529 ± 8 kJ/mol[1] |
Gibbs free energy(ΔfG⦵) | −1461 ± 8 kJ/mol[1] |
| Related compounds | |
Otheranions | Neptunium(III) chloride |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Neptunium(III) fluoride orneptunium trifluoride is a salt ofneptunium andfluorine with theformula NpF3.
Neptunium(III) fluoride can be prepared by reactingneptunium dioxide with a gas mixture ofhydrogen andhydrogen fluoride at 500 °C:[1]
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