Abstract

The dinuclear ruthenium carbonyl cluster {Ru 2 (CO) 6 -μ 2 -η 3 -[(Ph)C C(H) C(H) N C(H) C(H) C(H)(Ph)]} is produced from the reaction of cinnamaldehyde and Ru 3 (CO) 12 in a 2.0 M solution of ammonia in ethanol. From the crystal structure it gets obvious that ammonia reacted with two molecules of cinnamaldehyde. The resulting ligand may best be described as a formally dianionic ruthenium coordinated imino-allyl-system with one exocyclic 3-phenylallylidene unit that shows no interaction with the transition metals whereas the second one is bound to ruthenium via a C H activation step in γ-position with respect to the nitrogen atom.

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