Formula I2O5 Melting point 300 °C | Molar mass 333.81 g/mol Density 4.98 g/cm³ | |
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Appearance white crystalline solid; hygroscopic | ||
Aluminum and iodine pentoxide aerosolized ignition
Iodine pentoxide is the chemical compound with the formula I2O5. This iodine oxide is the anhydride of iodic acid, and the only stable oxide of iodine. It is produced by dehydrating iodic acid at 200 °C in a stream of dry air:
Contents
- Aluminum and iodine pentoxide aerosolized ignition
- Aluminum and iodine pentoxide aerosolized igntion test 2
- Structure
- Reactions
- Other compounds
- References
Aluminum and iodine pentoxide aerosolized igntion test 2
Structure
I2O5 is bent with an I-O-I angle of 139.2°, but the molecule has no mirror plane so its symmetry is not C2v. The terminal I-O distances are around 1.80 Å and the bridging I-O distances are around 1.95 Å.
Reactions
Iodine pentoxide easily oxidises carbon monoxide to carbon dioxide at room temperature:
5CO + I2O5 → I2 + 5CO2This reaction can be used to analyse the concentration of CO in a gaseous sample.
I2O5 forms iodyl salts, [IO2+], with SO3 and S2O6F2, but iodosyl salts, [IO+], with concentrated sulfuric acid.
Iodine pentoxide decomposes to iodine (vapor) and oxygen when heated to about 350 °C.
Other compounds
