Construction of 3d–4f heterometallic coordination polymers by simultaneous use of hexacyanometalate building-blocks and exo-bidentate ligands

Abstract

The reaction of Pr(NO₃)₃·6H₂O with 4,4′-bipyridine N,N′-dioxide (L) and K₃[M(CN)₆] [M = Fe^III, Co^III] gives isomorphous heteropolynuclear complexes with formula [{(H₂O)₅LPr–NC–M(CN)₅ }(μ-L)]·0.5L·4H₂O, which exhibit a novel supramolecular architecture created by the interplay of coordinative, hydrogen bonding and π–π stacking interactions.