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4. Acidity and organometallic anion formation
In the case of carbonyl iron, the carbonylate anion is generated without passing through the acid. This is an intramolecular redox reaction observed when carbonyl iron is placed in an alkaline medium:
On the one hand, iron goes to oxidation state -II, on the other, carbon goes from oxidation state +II to oxidation state +IV. We have seen in previous articles in the Organometallic Chemistry section that it is preferable to use sodium to obtain the anion
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Acidity and organometallic anion formation