Phenanthroline-appended porphyrazines: synthesis and conversion into solitaire Ru(II) complexes
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Unsymmetrical porphyrazines (tetraazaporphyrins) bearing a single bidentate phenanthroline chelating group M[pz(t-butylphenyl)6phen] have been prepared by the base-catalyzed cross condensation of 3,4-bis(4-tert-butylphenyl)pyrroline-2,5-diimine (in excess) with 6,7-dicyanodipyridoquinoxaline. Treatment of these centrally metalated (M = Mg, Zn) ligands with various Ru(II) salts has yielded several bimetallic complexes including the first coordinatively linked porphyrazine trimer. The optical properties of these complexes are shown to be a function of the additional ligands surrounding the asymmetric ruthenium center. © 2001 Elsevier Science B.V.
author list (cited authors)
Montalban, A. G., Sakellariou, E. G., Riguet, E., McCubbin, Q. J., Barrett*, A., & Hoffman*, B. M.