Neptunium(III) chloride
{{Expand German|date=October 2020}}
{{chembox
| verifiedrevid =
| Name = Neptunium(III) chloride
| ImageFile = UCl3 without caption.png
| ImageName =
| IUPACName = Neptunium(III) chloride
| OtherNames = Neptunium trichloride
| Section1 = {{Chembox Identifiers
| CASNo_Ref = {{cascite|correct|??}}
| CASNo = 20737-06-8
| PubChem = 71402371
| StdInChI=1S/3ClH.Np/h3*1H;/q;;;+3/p-3
| StdInChIKey = YCRHCDNZKKGRFF-UHFFFAOYSA-K
| SMILES = Cl[Np](Cl)Cl
| SMILES2 = [Cl-].[Np+3].[Cl-].[Cl-]
}}
| Section2 = {{Chembox Properties
| Formula = NpCl3
| MolarMass = 343.41 g/mol
| Appearance = green solid《无机化学丛书》.第十卷 锕系 锕系后元素. 张青莲 等. 科学出版社. 8.3.2 镎的卤化物. 2.氯化物 . P160. {{ISBN|978-7-03-030572-5}}
| Density = 5.58g/cm3
| MeltingPtC = 800
| MeltingPt_ref=Arnold F. Holleman, Nils Wiberg: Lehrbuch der Anorganischen Chemie, 102. Auflage, de Gruyter, Berlin 2007, {{ISBN|978-3-11-017770-1}}, S. 1969.
| BoilingPt =
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| Section3 = {{Chembox Structure
| CrystalStruct =
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| Section8 = {{Chembox Related
| OtherAnions = Neptunium(III) fluoride
| OtherCations =
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}}
Neptunium(III) chloride or neptunium trichloride is an inorganic compound with a chemical formula NpCl3. This salt is strongly radioactive.
Production
Neptunium(III) chloride can be produced by reducing neptunium(IV) chloride by ammonia or hydrogen at 350~400 °C:
:{{chem2 | 2 NpCl4 + H2 -> 2 NpCl3 + 2 HCl }}
Chemical properties
Neptunium(III) chloride hydrolyzes at 450 °C and forms an oxychloride NpOCl.
References
{{reflist}}
{{Neptunium compounds}}
{{Chlorides}}
{{Actinide halides}}