Three-metal-center spin interactions through the intercalation of metal azaporphines and porphines into an organic pillared coordination box

Abstract

Discrete homo Cu–Cu–Cu and hetero Cu–Pd–Cu or Cu–Co–Cu metal arrays are prepared within an organic-pillared coordination box by inserting M(II)-azaporphine/porphine cartridges (M = Cu(II), Pd(II) or Co(II)), where the metal arrays show unique spin interactions in ESR: in particular, Δm_s = 3 for the Cu–Cu–Cu array.