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

|Appearance = Green solid

}}

|Section3={{Chembox Structure

|CrystalStruct = Monoclinic, mS60

|SpaceGroup = C2/c, No. 15{{cite journal|doi=10.1107/S0365110X49001016|title=Crystal chemical studies of the 5f-series of elements. XII. New compounds representing known structure types|journal=Acta Crystallographica|volume=2|issue=6|pages=388–390|year=1949|last1=Zachariasen|first1=W. H.|doi-access=free}}

|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

|DeltaHf = −1874 ± 16 kJ/mol

{{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 }}

|Entropy = 148 ± 3 J/mol·K

|DeltaGf = −1783 ± 16 kJ/mol

|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}}