Bridging coordination of acenaphthylene to a Pd 3 chain or a Pd 4 sheet cluster.

The coordination behaviour of multinuclear clusters to fused arene ligands is of continuous interest due to its relevance to metal catalysts supported by graphitic carbon materials. Herein, we report the bridging coordination behaviour of acenaphthylene to a Pd 3 or a Pd 4 cluster. A bis-acenaphthylene Pd 3 chain cluster and an acenaphthylene-COT Pd 4 sheet cluster were isolated, and the μ 3 -π-coordination mode or the μ 4 -oxidative π-addition mode of the acenaphthylene ligand in each cluster was elucidated by X-ray structure analysis.