Tetracoordinated 15-Electron Ruthenium(I) in a Discrete Triruthenium Framework.

This paper highlights the unique case of a tetracoordinated Ru(I) (15-electron) component in a structurally characterized discrete triruthenium setup, [(acac)RuL(μ-Ru)LRu (acac)](ClO) ([](ClO), where acac = acetylacetonate; = 1), which was formed along with the monomeric [(acac)Ru(L)] ([]ClO; = /) and dimeric [{(acac)Ru}(μ-L)](ClO) ([](ClO); = 1) counterparts upon interaction of {Ru(acac)} and L = 3,3'-dipyridin-2-yl-1,1'-bis(imidazo[1,5-]pyridinyl).