A rare pentanuclear CuII-based coordination framework exhibiting coexistence of antiferromagnetic and ferromagnetic couplings

A unique pentacopper(II) cluster-based 3-D coordination framework, [Cu5(nip)4(μ3-OH)2-(dps)2(H2O)4]n, has been prepared by hydrothermal reaction of Cu(II) with 5-nitroisophthalic acid (H2nip) and 4,4′-dipyridylsulfide ligands (dps), which exhibits a 6-connected pcu net and coexistence of antiferromagnetic and ferromagnetic couplings.