Iodine monobromide

Iodine monobromide is an interhalogen compound with the formula IBr. It is a dark red solid that melts near room temperature.^[1] Like iodine monochloride, IBr is used in some types of iodometry. It serves as a source of I⁺. Its Lewis acid properties are compared with those of ICl and I₂ in the ECW model. It can form CT adducts with Lewis donors.^[2]

Iodine monobromide

Names
IUPAC name Iodine monobromide
Other names Iodine bromide
Identifiers
CAS Number	7789-33-5 Y
3D model (JSmol)	Interactive image
ChemSpider	74216 N
ECHA InfoCard	100.029.236
PubChem CID	82238
UNII	G0K622RD9N Y
CompTox Dashboard (EPA)	DTXSID2064862
InChI InChI=1S/BrI/c1-2 N Key: CBEQRNSPHCCXSH-UHFFFAOYSA-N N InChI=1/BrI/c1-2 Key: CBEQRNSPHCCXSH-UHFFFAOYAO
SMILES BrI
Properties
Chemical formula	IBr
Molar mass	206.904 g/mol
Appearance	dark red solid
Melting point	42 °C (108 °F; 315 K)
Boiling point	116 °C (241 °F; 389 K)
Related compounds
Other anions	iodine monochloride, iodine monofluoride
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). N verify (what is YN ?) Infobox references

Iodine monobromide is formed when iodine and bromine are combined in a chemical reaction:.^[3]

I₂ + Br₂ → 2 IBr