Neptunium(III) fluoride
Names | |
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IUPAC name Neptunium(III) fluoride | |
Other names Neptunium trifluoride | |
Identifiers | |
3D model (JSmol) | |
PubChem CID |
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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 | |
Heat capacity (C) | 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 | |
Other anions | Neptunium(III) chloride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Neptunium(III) fluoride or neptunium trifluoride is a salt of neptunium and fluorine with the formula NpF3.
Synthesis
[edit]Neptunium(III) fluoride can be prepared by reacting neptunium dioxide with a gas mixture of hydrogen and hydrogen fluoride at 500 °C:[1]
References
[edit]- ^ a b c d e f g Haire, Richard G. (2006). "Neptunium". In Morss; Edelstein, Norman M.; Fuger, Jean (eds.). The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media. pp. 730–736. doi:10.1007/1-4020-3598-5_9. ISBN 1-4020-3555-1.
- ^ Zachariasen, W. H. (1949). "Crystal chemical studies of the 5f-series of elements. XII. New compounds representing known structure types". Acta Crystallographica. 2 (6): 388–390. doi:10.1107/S0365110X49001016.