Neptunium(IV) fluoride
{{Chembox
|ImageFile = ThCl4.png
|IUPACName = Neptunium(IV) fluoride
|OtherNames = Neptunium tetrafluoride
|Section1 = {{Chembox Identifiers
|CASNo = 14529-88-5
|PubChem = 165358598
|PubChem_Comment=
|SMILES = F[Np](F)(F)F
|StdInChI = 1S/4FH.Np/h4*1H;/q;;;;+4/p-4
|StdInChIKey =SOLQLNAXKAQIPH-UHFFFAOYSA-J
}}
|Section2={{Chembox Properties
|Formula = NpF4
|MolarMass = 313 g/mol
}}
|Section3={{Chembox Structure
|CrystalStruct = Monoclinic, mS60
|LattConst_a = 1.27 nm
|LattConst_b = 1.0082 nm
|LattConst_c = 0.833 nm
|LattConst_beta = 126.03
|UnitCellFormulas = 12
|UnitCellVolume =0.86256 nm3
}}
|Section4={{Chembox Thermochemistry
{{cite book
|title = The Chemistry of the Actinide and Transactinide Elements |doi=10.1007/1-4020-3598-5_9
|editor1-last = Morss|editor2-first = Norman M.
|editor2-last = Edelstein
|editor3-last = Fuger|editor3-first = Jean
|last = Haire|first = Richard G.
|publisher = Springer Science+Business Media
|year = 2006
|isbn = 1-4020-3555-1
|location = Dordrecht, The Netherlands
|edition = 3rd
|pages= 730–736|chapter=Neptunium }}
|HeatCapacity = 116 ± 4 J/mol·K
}}
}}
Neptunium(IV) fluoride or neptunium tetrafluoride is a inorganic compound with the formula NpF4. It is a green salt and is isostructural with UF4.{{Greenwood&Earnshaw2nd}}
Synthesis
image:Kristallstruktur Uran(IV)-fluorid.png
Neptunium(IV) fluoride can be prepared by reacting neptunium(III) fluoride or neptunium dioxide with a gas mixture of oxygen and hydrogen fluoride at 500 °C:
:{{chem2|4 NpF3 + O2 + 4 HF → 4 NpF4 + 2 H2O}}
It can also be prepared by treating neptunium dioxide with HF gas:
:{{chem2|NpO2 + 4 HF → NpF4 + 2 H2O}}
References
{{reflist}}
{{inorganic-compound-stub}}
{{Neptunium compounds}}
{{fluorine compounds}}
{{Actinide halides}}