Iron tetracarbonyl diiodide
Chemical compound
From Wikipedia, the free encyclopedia
Iron tetracarbonyl diiodide is the inorganic compound with the formula FeI2(CO)4. The molecule features four carbonyl ligands and two iodides. It is a low-spin complex of ferrous iron. As confirmed by X-ray crystallography, the compound has cis stereochemistry.[1] It is a black solid that is soluble in dichloromethane and related organic solvents.
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| Properties | |
| C4FeI2O4 | |
| Molar mass | 421.694 g·mol−1 |
| Appearance | black solid |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Preparation and reactions
It is prepared by the reaction of molecular iodine with iron pentacarbonyl, following a procedure first reported by Hieber and Wirschung in 1940:[2]
- Fe(CO)5 + I2 → FeI2(CO)4 + CO
Iron tetracarbonyl diiodide reacts with a variety of Lewis bases with displacement of one or two CO ligands. The corresponding dibromide is even more reactive toward Lewis bases.[3][4]
