Manganese diselenide

Manganese(II) diselenide
Identifiers
CAS Number	12299-98-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	74897;
ECHA InfoCard	100.032.323
EC Number	235-569-6;
PubChem CID	83014;
UNII	VJ084QU1P0 ;
CompTox Dashboard (EPA)	DTXSID0065301 ;
	InChI InChI=1S/Mn.2Se Key: KDAKOPXAEMJUSU-UHFFFAOYSA-N;
	SMILES [Mn](=[Se])=[Se];
Properties
Chemical formula	MnSe2
Molar mass	212.880 g·mol−1
Appearance	grey, odorless powder
Density	5.55 g/cm3
Solubility in water	insoluble
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H331, H373, H410
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Manganese diselenide is the inorganic compound with the formula MnSe₂. This rarely encountered solid is structurally similar to that of iron pyrite (FeS₂). Analogous to the description of iron pyrite, manganese diselenide is sometimes viewed as being composed of Mn²⁺ and Se₂²⁻ ions, although being a semiconductor, MnSe₂ is not appropriately described in formal oxidation states.

Identifiers
CAS Number	12299-98-8^Y
3D model (JSmol)	Interactive image
ChemSpider	74897
ECHA InfoCard	100.032.323
EC Number	235-569-6
PubChem CID	83014
UNII	VJ084QU1P0^Y
CompTox Dashboard (EPA)	DTXSID0065301
InChI InChI=1S/Mn.2Se Key: KDAKOPXAEMJUSU-UHFFFAOYSA-N
SMILES [Mn](=[Se])=[Se]
Properties
Chemical formula	MnSe₂
Molar mass	212.880 g·mol⁻¹
Appearance	grey, odorless powder
Density	5.55 g/cm³
Solubility in water	insoluble
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H331, H373, H410
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