The use of different metal salts, namely, Cu(NO3)2, Ni(NO3)2, Co(NO3)2, and Mn(NO3)2, resulted in different bulk magnetic properties. The bivalent cations are magnetically active and the resulting MOFs show linear dependences of the magnetic moment as a function of the applied magnetic field at 300 K. At a much lower temperature (5 K), a plateau is observed. This effect is described for paramagnets by the Brillouin function. The χ T value, where χ is the magnetic susceptibility, increases as a function of the cation: Cu 2+ < Ni 2+ <Co 2+ <Mn 2+ (Figure ).