Synthesis and characterization of three-dimensional 3d-3d and 3d-4f heterometallic coordination polymers with high thermal stability

Using 1,2-bis(4-pyridyl)ethane (bpe) and benzene-1,3-biscarboxylic acid (H-2-bba) as ligands, two novel heterometallic three-dimensional coordination polymers {[Zn3Mn1.5(bpe)(bba)(4)(Hbba)]center dot bpe)(n) (Mn-Zn) and {[Zn2Pr(bpe)(bba)(3)(Hbba)]center dot H2O)(n) (Pr-Zn) were isolated under hydrothermal conditions. Both complexes are constructed via 3d-3d and 3d-4f clusters as secondary building units, respectively, which represent the first template synthesis for 3D heterometallic MOFs.