Names | |
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IUPAC name
Iron oxychloride
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.054.740 |
EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
ClFeO | |
Molar mass | 107.29 g·mol−1 |
Appearance | Vivid, dark violet, opaque crystals |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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 (698 °F) over the course of several days:[2]
Alternatively, FeOCl may be prepared by the thermal decomposition of FeCl3⋅6H2O at 220 °C (428 °F) over the course of one hour:[3]