Synthesis, structure and magnetic property of a supramolecule with 1D metal–water chains containing planar hexacyclic water rings

An eight-nuclear complex, {[Ni(tacn)2]5[Cr(CN)6]3}ClO4 · 18.5H2O (tacn = 1, 4, 7-triazacyclononane), connected by 18.5 water molecules has been synthesized and characterized structurally and exhibits weak ferromagnetic interactions. This complex consists of a 3D structure with 1D metal–water chain containing planar hexacyclic water rings.