Iodine monobromide
| Names | |
|---|---|
| IUPAC name Iodine monobromide | |
| Other names Iodine bromide | |
| Identifiers | |
| 3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.029.236 | 
| PubChem CID | |
| UNII | |
| CompTox Dashboard (EPA) | |
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| Properties | |
| 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). Infobox references | |
Iodine monobromide is an interhalogen compound with the formula IBr. It is a dark red solid that melts near room temperature. 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.
Iodine monobromide is formed when iodine and bromine are combined in a chemical reaction:.
- I2 + Br2 → 2 IBr