A NdIIICuII molecular material with a honeycomb-like structure.

The first two-dimensional molecular material Nd(III)−Cu(II) has been synthesized by reaction in DMF of [Cu(opba)]2- and Nd3+. The compound {Nd2[Cu(opba)0.5(ox)]3·9DMF}·4.5DMF has been structurally characterized. Its crystalline structure can be described as the superposition of honeycomb-like molecular motifs. This material exhibits a quasi nonmagnetic ground state at low temperature.