Merging of inner and outer ruthenium organometallic coordination motifs within an azuliporphyrin framework

Abstract

The insertion of ruthenium(II) into an azuliporphyrin (TPAP) has yielded carbonyl ruthenium(II) azuliporphyrin [Ru(TPAP)(CO)] featuring an equatorial CNNN set of donors. Its azulene moiety serves as the π-coordination platform to accommodate the Ru₄(CO)₉ cluster. This chemistry proved to be general giving rise to a series of bimetallic complexes [M(TPAP){Ru₄(CO)₉}] (M = Ru(CO), Ni, Pd, Pt).