Interaction between the NO+ ligand and trans π-donor ligands in chloro(2-methyl-8-quinolinolato) nitrosyl(8-quinolinolato)-ruthenium(II) complexes

Abstract The reaction of [RuCl 3 (2mqn)NO] (2mqn is 2-methyl-8-quinolinolato ligand whose phenolato oxygen is trans to the NO) with an excess of 8-quinolinol (Hqn) and the reaction of [RuCl 3 (qn)NO] (phenolato oxygen in the qn is trans to the NO) with an excess of 2-methyl-8-quinolinol give [RuCl(2mqn) (qn)NO] ( 1 ) as a major product, in which oxygen of the 2mqn is trans to the NO and the configuration of the ligating nitrogen atoms of the qn and 2mqn is trans (N,N). The methyl group in the 2-position of qn causes the oxygen in the 2mqn to coordinate predominantly in the trans position to the NO 1 ligand.