190. “Regioselective Synthesis and Characterization of Multinuclear Convex-bound Ruthenium-[n]Cycloparaphenylene (n=5 and 6) Complexes”
     E. Kayahara, V.K. Patel, A. Mercier, E.P. Kündig, S. Yamago,
     Angew. Chem. Int. Ed. 2016, 55, 302-306.

Mono- and multinuclear complexes of ruthenium and [n]cycloparaphenylene (CPP, n=5 and 6) were synthesized in excellent yields through ligand exchange of the cationic complex [(Cp)Ru(CH₃CN)₃](PF₆) with CPP. In the multinuclear complexes, ruthenium selectively coordinated to alternate paraphenylene units to give bis- and tris-coordinated Ru complexes for [5] and [6]CPPs, respectively. Single-crystal X-ray analysis revealed the Ru was coordinated with η⁶-hapticity on the convex surface of CPP.

DOI : 10.1002/anie.201508003 

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