Iodine trichloride

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Iodine trichloride
Full structural formula of the dimer
Space-filling model of the dimer
Commercial sample of iodine trichloride
Names
IUPAC name
Iodine trichloride
Other names
Diiodine hexachloride
Identifiers
3D model (
JSmol
)
ChemSpider
ECHA InfoCard
 100.011.582 Edit this at Wikidata
UNII
  • InChI=1S/Cl3I/c1-4(2)3 checkY
    Key: PAWIVBWALDNUJP-UHFFFAOYSA-N checkY
  • InChI=1/Cl3I/c1-4(2)3
    Key: PAWIVBWALDNUJP-UHFFFAOYAF
  • dimer
    : Cl[I-]1(Cl)[Cl+][I-]([Cl+]1)(Cl)Cl
Properties
I2Cl6
Molar mass 466.5281 g/mol
Appearance yellow solid
Density 3.11 g/cm3
Melting point 63 °C (145 °F; 336 K)
−90.2×10−6 cm3/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Iodine trichloride is an

dimer I2Cl6, with two bridging Cl atoms.[1]

It can be prepared by reacting iodine with an excess of liquid chlorine at −70 °C. In the molten state it is conductive, which may indicate dissociation:[2]

I2Cl6 ⇌ ICl+
2 + ICl−
4

Iodine trichloride can be created by heating a mixture of liquid iodine and chlorine gas to 105 °C.

It is an oxidizing agent, capable of causing fire on contact with organic materials.

References

  1. doi:10.1107/S0365110X54001260
    .
  2. ISBN 978-0-08-037941-8
    .
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