Disulfur diiodide

Disulfur diiodide
	Sulfur, S; Iodine, I
Names
	IUPAC name Diiododisulfane
	Systematic IUPAC name Iodosulfanyl thiohypoiodite
	Other names Sulfur monoiodide (incorrect name)
Identifiers
CAS Number	53280-15-2 ;
3D model (JSmol)	Interactive image;
ChemSpider	31043639;
ECHA InfoCard	100.053.127
EC Number	258-458-4;
PubChem CID	71774781;
CompTox Dashboard (EPA)	DTXSID101315384 ;
	InChI InChI=1S/I2S2/c1-3-4-2 Key: NJLGSHIGTKGJLG-UHFFFAOYSA-N;
	SMILES S(SI)I;
Properties
Chemical formula	S2I2
Molar mass	317.93 g·mol−1
Appearance	Reddish-brown solid
Melting point	−30 °C (−22 °F; 243 K) (decomposes)
Solubility	Soluble in carbon tetrachloride, slightly soluble in pentane
Structure
Point group	C2
Coordination geometry	2 at sulfur atoms
Molecular shape	gauche
Related compounds
Related compounds	Hydrogen disulfide; Disulfur difluoride; Disulfur dichloride; Disulfur dibromide;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Disulfur diiodide is an unstable inorganic chemical compound with the chemical formula S₂I₂. It is a red-brown solid that decomposes above −30 °C to elemental sulfur and iodine.