Porphyrinogen tetraanion functioning as a polymetallic assembler: nickel-meso-octaethylporphyrinogen binding four transition metal ions at the periphery

Abstract

Nickel(II)-meso-octaethylporphyrinogen dianion behaves as a π-extended ligand binding four M(CO)₃ [M = Cr, Mo] fragments at the periphery, so that the porphyrinogen can assemble five metal centers around itself.