Neptunium(III) chloride

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Neptunium(III) chloride

Names
IUPAC name Neptunium(III) chloride
Other names Neptunium trichloride
Identifiers
CAS Number	20737-06-8 Y
3D model ( JSmol )	Interactive image Interactive image
PubChem CID	19902958
InChI InChI=1S/3ClH.Np/h3*1H;/q;;;+3/p-3 Key: YCRHCDNZKKGRFF-UHFFFAOYSA-K
SMILES Cl[Np](Cl)Cl [Cl-].[Np+3].[Cl-].[Cl-]
Properties
Chemical formula	NpCl3
Molar mass	343.41 g/mol
Appearance	green solid[1]
Density	5.58g/cm3
Melting point	800 °C (1,470 °F; 1,070 K)[2][1]
Related compounds
Other anions	Neptunium(III) fluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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:^[1]

${\displaystyle {\ce {2{NpCl4}+{H2}\longrightarrow 2{NpCl3}+2{HCl}}}}$

Chemical properties

Neptunium(III) chloride hydrolyzes at 450 °C and forms an