Iodine trichloride
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| Names | |
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| IUPAC name
iodine trichloride
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.011.582 |
PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| I2Cl6 | |
| Molar mass | 466.5281 g/mol |
| Appearance | yellow solid |
| Density | 3.11 g/cm3 |
| Melting point | 63 °C |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Iodine trichloride is an interhalogen compound of iodine and chlorine. It is bright yellow and in the solid state is present as a planar dimer I2Cl6, Cl2I(μ-Cl)2ICl2, with two bridging Cl atoms.[1]
It can be prepared by reacting iodine with an excess of liquid chlorine at −70 °C. In the melt it is conductive, which may indicate dissociation:[2]
- I2Cl6 ⇌ ICl2+ + ICl4−
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
- ^ K. H. Boswijk and E. H. Wiebenga (1954). "The crystal structure of I2Cl6 (ICl3)". Acta Crystallographica. 7 (5): 417–423. doi:10.1107/S0365110X54001260.
{{cite journal}}: Unknown parameter|part=ignored (help) - ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
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