Astatine iodide

Astatine iodide is an interhalogen compound with the chemical formula AtI. It is the second heaviest known interhalogen compound, after iodine tribromide.

Astatine iodide

Names
IUPAC name Astatine monoiodide
Other names Astatine iodide
Identifiers
CAS Number	15194-73-7 Y
3D model (JSmol)	Interactive image
ChemSpider	34496389
PubChem CID	72993917
CompTox Dashboard (EPA)	DTXSID901030152
InChI InChI=1S/AtH2.HI/h1H2;1H/q+1;/p-1 Key: TWAXUBWUPRBIEH-UHFFFAOYSA-M InChI=1/AtH2.HI/h1H2;1H/q+1;/p-1 Key: TWAXUBWUPRBIEH-REWHXWOFAE
SMILES I[At]
Properties
Chemical formula	AtI
Molar mass	336.904 g/mol
Boiling point	213 °C; 415 °F; 486 K [1]
Related compounds
Other anions	Astatine monobromide Astatine monochloride
Related interhalogen compounds	Iodine monochloride Iodine monofluoride Bromine monochloride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Production

Astatine iodide is produced by the direct combination of astatine and iodine in a 1:1 molar ratio:^[2]

At₂ + I₂ → 2 AtI