Iron oxychloride

Iron oxychloride
Names
IUPAC name
Iron oxychloride
Identifiers
56509-17-2 
ChemSpider 4955733 
EC number 260-233-0
Jmol-3D images Image
PubChem 6453349
Properties
Molecular formula
ClFeO
Molar mass 107.30 g·mol−1
Appearance Vivid, dark violet, opaque crystals
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Iron oxychloride is the inorganic compound with the formula FeOCl. This purple solid adopts a layered structure, akin to that of cadmium chloride.[1] The material slowly hydrolyses in moist air. The solid intercalates electron-donors such as tetrathiafulvalene and even pyridine to give mixed valence charge-transfer salts. Intercalation is accompanied by a marked increase in electrical conductivity and a color change to black.[2]

FeOCl is prepared by heating iron(III) oxide with ferric chloride at 370 °C over the course of several days:[2]

Fe2O3 + FeCl3 → 3 FeOCl

References

  1. M. D. Lind "Refinement of the crystal structure of iron oxychloride" Acta Cryst. (1970). B26, 1058-1062. doi:10.1107/S0567740870003618
  2. 2.0 2.1 S. Kikkawa, F. Kanamaru, M. Koizumi "Layered Intercalation Compounds" Inorganic Syntheses, 1983, Volume 22, 86. doi:10.1002/9780470132531.ch17