Two-dimensional Mn(II) and Cd(II) networks with tetrazole-containing ligand and their properties

Three new Mn(II) and Cd(II) coordination polymers with kgd network topology, namely, [Mn3(T4)2(DEF)6] · 2H2O (1), [Mn3(T4)2(DMSO)2(CH3OH)4] · 2CH3OH · 3H2O (2) and [Cd3(T4)2(DMF)6] · 5CH3OH · 3DMF · H2O (3), have been prepared by reactions of tris[4-(1H-tetrazol-5-yl)phenyl]amine (H3T4) with corresponding metal salt and characterized by single crystal and powder X-ray diffractions, IR and thermogravimetric analyses. In compounds 1 and 3, the layers adopt center to center stacking, while there is a slight shifting between the adjacent layers in compound 2. Complexes 1 and 2 exhibit overall weak antiferromagnetic coupling between the neighboring Mn(II) atoms, and compound 3 shows luminescent property in the solid state at room temperature.