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Antimony triiodide
Names
	IUPAC name Antimony triiodide, Antimony(III) iodide
	Systematic IUPAC name Triiodostibane
Identifiers
CAS Number	7790-44-5 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	23032 ;
ECHA InfoCard	100.029.278
EC Number	232-205-8;
PubChem CID	24630;
UNII	52ZE5Y9Y82 ;
CompTox Dashboard (EPA)	DTXSID1064875 ;
	InChI InChI=1S/3HI.Sb/h31H;/q;;;+3/p-3 Key: KWQLUUQBTAXYCB-UHFFFAOYSA-K ; InChI=1/3HI.Sb.3H/h31H;;;;/q;;;+3;;;/p-3/r3HI.H3Sb/h31H;1H3/q;;;+3/p-3 Key: JYIUOADDPFDEAV-GODZFDHEAT; InChI=1/3HI.Sb/h31H;/q;;;+3/p-3 Key: KWQLUUQBTAXYCB-DFZHHIFOAA;
	SMILES [SbH3+3].[I-].[I-].[I-]; I[Sb](I)I;
Properties
Chemical formula	I3Sb
Molar mass	502.473 g·mol−1
Appearance	red crystals
Density	4.921 g/cm3
Melting point	170.5 °C (338.9 °F; 443.6 K)
Boiling point	401.6 °C (754.9 °F; 674.8 K)
Solubility in water	soluble, partially hydrolyses
Solubility	soluble in benzene, alcohol, acetone, CS2, HCl, KI, SnCl4, C2H7N; ,HI,alkali metal triiodides insoluble in CHCl3, CCl4
Solubility in diiodomethane	10.15% v/v (12 °C)
Magnetic susceptibility (χ)	-147.0·10−6 cm3/mol
Structure
Crystal structure	Rhombohedral, hR24,
Space group	R-3, No. 148
Dipole moment	1.58 D
Thermochemistry
Heat capacity (C)	81.6 J/mol·K (gas)
Std enthalpy of; formation (ΔfH⦵298)	-100.4 kJ/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H332, H411
Precautionary statements	P273
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 0.5 mg/m3 (as Sb)
REL (Recommended)	TWA 0.5 mg/m3 (as Sb)
	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

Antimony triiodide is the chemical compound with the formula Sb I₃. This ruby-red solid is the only characterized "binary" iodide of antimony, i.e. the sole compound isolated with the formula Sb_xI_y. It contains antimony in its +3 oxidation state. Like many iodides of the heavier main group elements, its structure depends on the phase. Gaseous SbI₃ is a molecular, pyramidal species as anticipated by VSEPR theory. In the solid state, however, the Sb center is surrounded by an octahedron of six iodide ligands, three of which are closer and three more distant.^[5] For the related compound BiI₃, all six Bi—I distances are equal.^[6]