Observation of localised CO exchange mechanisms at the iron and ruthenium centres of di-µ-carbonyl (Fe : Ru2, Ru3)-di-µ-hydrido (Ru1: Ru2, Ru3)-tetrahedro-tris(tricarbonylruthenium)dicarbonyliron(3Fe–Ru, 3Ru–Ru) by13C n.m.r spectroscopy

Abstract
Variable temperature 13C n.m.r. studies show that [H2FeRu3(CO)13] is undergoing intramolecular carbonyl exchange in three distinguishable stages: the first localised at iron; the second localised at the three rutheniums; and the last general over all metal centres.
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