Cyclometalated ruthenium(ii) complexes with a bis-carbene CCC-pincer ligand

Abstract

The first series of cyclometalated ruthenium complexes with a CCC-pincer bis-carbene ligand have been obtained as bench-stable compounds. Single-crystal X-ray analysis of one of these complexes with 4′-di-p-anisylamino-2,2′:6′,2′′-terpyridine is presented. The Ru^II/III redox potentials and MLCT absorptions of these complexes can be varied by attaching an electron-donating or -withdrawing group on the noncyclometalating ligand.