Iodine monobromide is an interhalogen compound with the formula IBr. It is a dark red solid that melts near room temperature. Like

iodine monochloride Iodine monochloride is an interhalogen compound with the formula . It is a red-brown chemical compound that melts near room temperature. Because of the difference in the electronegativity of iodine and chlorine, this molecule is highly polar ...

, IBr is used in some types of

iodometry Iodometry, known as iodometric titration, is a method of volumetric chemical analysis, a redox titration where the appearance or disappearance of elementary iodine Iodine is a chemical element; it has symbol I and atomic number 53. The hea ...

. It serves as a source of I⁺. Its Lewis acid properties are compared with those of ICl and I₂ in the

ECW model In chemistry, the ECW model is a semi-quantitative model that describes and predicts the strength of Lewis acid–Lewis base interactions. Many chemical reactions can be described as acid–base reactions, so models for such interactions are of pot ...

. It can form CT adducts with Lewis donors. Iodine monobromide is formed when

iodine Iodine is a chemical element; it has symbol I and atomic number 53. The heaviest of the stable halogens, it exists at standard conditions as a semi-lustrous, non-metallic solid that melts to form a deep violet liquid at , and boils to a vi ...

and

bromine Bromine is a chemical element; it has chemical symbol, symbol Br and atomic number 35. It is a volatile red-brown liquid at room temperature that evaporates readily to form a similarly coloured vapour. Its properties are intermediate between th ...

are combined in a chemical reaction:. :I₂ + Br₂ → 2 IBr

References

Iodine compounds Interhalogen compounds Diatomic molecules Bromides {{inorganic-compound-stub