Chromium(II) hydride

Chromium dihydride
Names
	Other names Chromium dihydride
Identifiers
CAS Number	13966-81-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	24769800;
PubChem CID	12132694;
	InChI InChI=1S/Cr.2H Key: YAWAIQPUSWNPRE-UHFFFAOYSA-N;
	SMILES [Cr].[H].[H];
Properties
Chemical formula	CrH2
Molar mass	54.0040 g/mol
Appearance	brown solid
Related compounds
Related compounds	Chromium(I) hydride; Chromium hydride;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chromium(II) hydride, systematically named chromium dihydride and poly(dihydridochromium) is pale brown solid inorganic compound with the chemical formula (CrH₂)_n (also written ([CrH₂])_n or CrH₂). Although it is thermodynamically unstable toward decomposition at ambient temperatures, it is kinetically metastable. It is the second simplest polymeric chromium hydride (after chromium(I) hydride).