Iridium disulfide

"IrS2" redirects here. For gene symbol, see IRS2.

Iridium disulfide is the binary inorganic compound with the formula IrS₂. Prepared by the direct reaction of the elements, the compound adopts the pyrite crystal structure at high pressure.^[1] At normal atmospheric pressures, an orthorhombic polymorph is observed.^[2]. The high- and low-pressure forms both feature octahedral Ir centers, but the S–S distances are pressure dependent.^[3] Although not practical, IrS₂ is a highly active catalyst for hydrodesulfurization.^[4]

Iridium disulfide

Identifiers
CAS Number	12030-51-2
3D model (JSmol)	Interactive image
ChemSpider	103869853
PubChem CID	154116933
InChI InChI=1S/Ir.2S Key: DUFDGYWNCWKJSM-UHFFFAOYSA-N
SMILES [S]=[Ir]=[S]
Properties
Chemical formula	IrS2
Molar mass	256.349
Density	9300 kg m–3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references