Ytterbium(II) chloride (YbCl₂) is an inorganic chemical compound. It was first prepared in 1929 by W. K. Klemm and W. Schuth, by reduction of ytterbium(III) chloride, YbCl₃, using hydrogen.

2 YbCl₃ + H₂ → 2 YbCl₂ + 2 HCl

Quick Facts Names, Identifiers ...

Ytterbium(II) chloride

Names
Other names ytterbium dichloride
Identifiers
CAS Number	13874-77-6 N
3D model (JSmol)	Interactive image
ChemSpider	75606 Y
ECHA InfoCard	100.034.197
EC Number	237-632-3
PubChem CID	83785
CompTox Dashboard (EPA)	DTXSID90930206
InChI InChI=1S/2ClH.Yb/h2*1H;/q;;+2/p-2 Y Key: LINIOGPXIKIICR-UHFFFAOYSA-L Y InChI=1S/2ClH.Yb/h2*1H;/q;;+2/p-2 Key: LINIOGPXIKIICR-UHFFFAOYSA-L
SMILES [Yb+2].[Cl-].[Cl-]
Properties
Chemical formula	YbCl2
Molar mass	243.95 g/mol
Appearance	green crystals
Density	5.27 g/cm3, solid
Melting point	721 °C (1,330 °F; 994 K)
Solubility in water	reacts[1]
Structure
Crystal structure	Orthorhombic, oP24
Space group	Pbca, No. 61
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

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Like other Yb(II) compounds and other low-valence rare earth compounds, it is a strong reducing agent. It is unstable in aqueous solution, reducing water to hydrogen gas.^[2]