Neptunium hexafluoride

Neptunium hexafluoride[1]
Names
IUPAC name
Neptunium(VI) fluoride
Identifiers
14521-05-2 YesY
Jmol interactive 3D Image
PubChem 19695135
Properties
F6Np
Molar mass 350.99 g·mol−1
Appearance orange crystals
Melting point 54.4 °C (129.9 °F; 327.5 K)
Boiling point 55.18 °C (131.32 °F; 328.33 K)
Structure
Orthorhombic, oP28
Pnma, No. 62
octahedral (Oh)
0 D
Related compounds
Related fluoroNeptuniums
Neptunium trifluoride

Neptunium tetrafluoride

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N (what is YesYN ?)
Infobox references

Neptunium hexafluoride (NpF6) is the highest fluoride of neptunium. It is an orange volatile crystalline solid.[1] It is relatively hard to handle, being very corrosive and radioactive. It is prepared by fluorination of Neptunium(IV) fluoride (NpF4) by powerful fluorinating agents such as elemental fluorine.[2]

NpF
4
+ F
2
NpF
6

It can also be obtained by fluorination of neptunium(III) fluoride.[3]

2 NpF
3
+ 3 F
2
→ 2 NpF
6

References

  1. 1 2 Gmelins Handbuch der anorganischen Chemie, System Nr. 71, Transurane, Teil C, p. 108–114.
  2. John G. Malm, Bernard Weinstock, E. Eugene Weaver: „The Preparation and Properties of NpF6; a Comparison with PuF6“, J. Phys. Chem., 1958, 62 (12), p. 1506–1508 (doi:10.1021/j150570a009).
  3. Sherman Fried, Norman Davidson: „The Preparation of Solid Neptunium Compounds“, J. Am. Chem. Soc., 1948, 70 (11), p. 3539–3547 (doi:10.1021/ja01191a003).
This article is issued from Wikipedia - version of the Wednesday, June 24, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.