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| Reference = <ref name="GMELIN_108_114">''[[Gmelins Handbuch der anorganischen Chemie]]'', System Nr. 71, Transurane, Teil C, p.&nbsp;108–114.</ref>
| Reference = <ref name="GMELIN_108_114">''[[Gmelins Handbuch der anorganischen Chemie]]'', System Nr. 71, Transurane, Teil C, p.&nbsp;108–114.</ref>
| ImageFile = Neptunium hexafluoride.svg
| ImageFile = Neptunium hexafluoride.svg
| ImageFile_Ref = {{Chemboximage|correct|??}}
| ImageFile_Ref = {{Chemboximage|correct|??}}
| ImageSize = 121
| ImageSize = 121
| ImageName = Stereo structural formula of Neptunium hexafluoride
| ImageName = Stereo structural formula of Neptunium hexafluoride
| IUPACName = Neptunium(VI) fluoride
| IUPACName = Neptunium(VI) fluoride
| SystematicName = <!-- Hexafluoroneptunium (substitutive) OR Hexafluoridoneptunium (additive) -->
| SystematicName = <!-- Hexafluoroneptunium (substitutive) OR Hexafluoridoneptunium (additive) -->
| Section1 = {{Chembox Identifiers
|Section1={{Chembox Identifiers
| CASNo = 14521-05-2
| CASNo = 14521-05-2
| CASNo_Ref = {{cascite|correct|??}}
| CASNo_Ref = {{cascite|correct|??}}
| PubChem = 19695135
| PubChem = 19695135
⚫
| ChemSpiderID =
| PubChem_Ref = {{Pubchemcite|correct|PubChem}}
⚫
| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}
⚫
| ChemSpiderID =
⚫
| SMILES = F[Np](F)(F)(F)(F)F
⚫
| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}
⚫
| StdInChI = 1S/6FH.Np/h6*1H;/q;;;;;;+6/p-6
⚫
| SMILES = F[Np](F)(F)(F)(F)F
⚫
| StdInChI_Ref = {{stdinchicite|changed|chemspider}}
⚫
| StdInChI = 1S/6FH.Np/h6*1H;/q;;;;;;+6/p-6
⚫
| StdInChIKey =
⚫
| StdInChI_Ref = {{stdinchicite|changed|chemspider}}
⚫
| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}
⚫
| StdInChIKey =
⚫
| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}
}}
}}
| Section2 = {{Chembox Properties
|Section2={{Chembox Properties
| Np = 1
| Np=1 | F=6
⚫
| Appearance = orange crystals
| F = 6
| ExactMass = 351,04 g·mol<sup>−1</sup>
| Density = <!-- g·cm<sup>−3</sup> -->
⚫
| MeltingPtC = 54.4
⚫
| Appearance = orange crystals
⚫
| BoilingPtC = 55.18
| Density = <!-- g·cm<sup>−3</sup> -->
⚫
| MeltingPtC = 54.4
⚫
| BoilingPtC = 55.18
}}
}}
| Section3 = {{Chembox Structure
|Section3={{Chembox Structure
| CrystalStruct = [[Orthorhombic]], [[Pearson symbol|oP28]]
| CrystalStruct = [[Orthorhombic]], [[Pearson symbol|oP28]]
| SpaceGroup = Pnma, No. 62
| SpaceGroup = Pnma, No. 62
| Coordination = octahedral (''O<sub>h</sub>'')
| Coordination = octahedral (''O<sub>h</sub>'')
| Dipole = 0 D
| Dipole = 0 D
}}
}}
| Section4 = {{Chembox Related
|Section4={{Chembox Related
| Function = fluoroNeptuniums
| OtherFunction_label = fluoroNeptuniums
| OtherFunctn = [[Neptunium trifluoride]]<br />
| OtherFunction = [[Neptunium trifluoride]]<br />
[[Neptunium tetrafluoride]]
[[Neptunium tetrafluoride]]
}}
}}

Revision as of 12:00, 24 June 2015

Neptunium(VI) fluoride[1]
Stereo structural formula of Neptunium hexafluoride
Names
IUPAC name
Neptunium(VI) fluoride
Identifiers
3D model (JSmol)
  • InChI=1S/6FH.Np/h6*1H;/q;;;;;;+6/p-6 ☒N
  • F[Np](F)(F)(F)(F)F
Properties
F6Np
Molar mass 351 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 checkY☒N ?)

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. ^ a b 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).
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