Platinum diselenide

Platinum diselenide
Names
	Other names Platinum(IV) selenide; Sudovikovite
Identifiers
CAS Number	12038-26-5 ;
3D model (JSmol)	Interactive image;
ChemSpider	103869865 ;
PubChem CID	101946448;
CompTox Dashboard (EPA)	DTXSID201312652 ;
	InChI InChI=1S/Pt.2Se Key: JTPDXCIVXNLRFP-UHFFFAOYSA-N ;
	SMILES [Se]=[Pt]=[Se];
Properties
Chemical formula	PtSe2
Molar mass	353.026 g·mol−1
Appearance	opaque metallic yellowish white
Density	9.54
Melting point	decomposes
Solubility in water	insoluble
Band gap	0 (bulk) 1.3 eV monolayer
Structure
Crystal structure	space group P3m1 164 hexagonal
Lattice constant	a = 3.728, c = 5.031
Coordination geometry	octahedral
Related compounds
Other anions	platinum disulfide platinum ditelluride PtSeTe PtSSe
Other cations	palladium diselenide NiSeTe
Related platinum selenides	Luberoite Pt5Se4
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). (what is ?) Infobox references

Platinum diselenide is a transition metal dichalcogenide with the formula PtSe₂. It is a layered substance that can be split into layers down to three atoms thick. PtSe₂ can behave as a metalloid or as a semiconductor depending on the thickness.