Diiodine oxide

This page is about the compound I2O. For the molecule IO, see Iodine monoxide.

Diiodine oxide or Iodo hypoiodite

Names
IUPAC name

Diiodine oxide

Systematic IUPAC name

Iodo hypoiodite[1]

Other names

Iodine hypoiodide, diiodooxidane, diiodine monoxide, hypoiodous anhydride

Identifiers

CAS Number

* 39319-71-6

3D model (JSmol)

* Interactive image

PubChem CID

* 14513630

InChI

* InChI=1S/I2O/c1-3-2

Key: VSHDHKDWBUMJIJ-UHFFFAOYSA-N

SMILES

* O(I)I

Properties

Chemical formula

| I2O
Molar mass | 269.808 g/mol
Related compounds

Related compounds

* Water
* Oxygen difluoride
* Dichlorine monoxide
* Dibromine monoxide

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

Diiodine oxide, also known as iodo hypoiodite, is an oxide of iodine that is equivalent to an acid anhydride of hypoiodous acid. This substance is unstable and it is very difficult to isolate.[2]

## Preparation

Diiodine oxide can be prepared by reacting iodine with potassium iodate (KIO3) in 96% sulfuric acid and then extracting it into chlorinated solvents.[2]

## Reactions

Diiodine oxide reacts with water to form hypoiodous acid:

2O + H
2O → 2 HIO

## References

1. ↑ "Epoxy-iodide". https://pubchem.ncbi.nlm.nih.gov/compound/14513630#section=IUPAC-Name&fullscreen=true.
2. ↑ 2.0 2.1 Furrow, Stanley D.; Schmitz, Guy E. (2019-09-01). "I2O in solution and volatility" (in en). Chemical Physics Letters 730: 186–190. doi:10.1016/j.cplett.2019.05.052. ISSN 0009-2614. Bibcode: 2019CPL...730..186F. http://www.sciencedirect.com/science/article/pii/S0009261419304579.

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Iodine compounds

Iodine(-I)|

* HI
* AtI
* ICN
* I−

Iodine(I)|

* HIO
* ICl
* IF
* IBr

Iodine(III)|

* HIO2
* ICl3
* IF3

Iodine(V)|

* HIO3
* IF5
* I2O5

Iodine(VII)|

* HIO4
* H5IO6
* IF7

Template:Oxide

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