Ferromagnetic Ordering and Metamagnetism in Malonate Bridged 3D Diamond-like and Honeycomb-like Networks: [Cu(mal)(DMF)]n and {[Cu(mal)(0.5pyz)]·H2O}n (mal = Malonate Dianion, DMF = N,N-dimethylformamide, pyz = Pyrazine)

Two three-dimensional (3D) malonate bridged networks, [Cu(mal)(DMF)]n (1) and {[Cu(mal)(0.5pyz)]·H2O}n (2), have been synthesized in H2O-DMF solution. Compound 1 exhibits ferromagnetic ordering below 2.6 K (Tc), and 2 displays a metamagnetic behavior below 3.2 K (TN).