Neptunium(III) fluoride

Neptunium(III) fluoride or neptunium trifluoride is a chemical compound of neptunium and fluorine with the formula NpF3.

Neptunium(III) fluoride
Names
IUPAC name
Neptunium(III) fluoride
Other names
Neptunium trifluoride
Identifiers
3D model (JSmol)
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
0.32077 nm3
6
Thermochemistry
94 ± 3 J/mol·K[1]
131 ± 3 J/mol·K[1]
Std enthalpy of
formation (ΔfH⦵298)
 −1529 ± 8 kJ/mol[1]
-1461 ± 8 kJ/mol[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Synthesis

Neptunium(III) fluoride can be prepared by reacting neptunium dioxide with a gas mixture of hydrogen and hydrogen fluoride at 500 °C:[1]

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References
  1. 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.
  2. 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. doi:10.1107/S0365110X49001016.
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