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 = FeIII, CoIII] 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.