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 (H2bba) as ligands, two novel heterometallic three-dimensional coordination polymers {[Zn3Mn1.5(bpe)(bba)4(Hbba)]·bpe}n (Mn−Zn) and {[Zn2Pr(bpe)(bba)3(Hbba)]·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.

以1,2-双(4-吡啶基)乙烷(1,2-bis(4-pyridyl)ethane, bpe)与苯-1,3-二羧酸(benzene-1,3-biscarboxylic acid, H2bba)作为配体，通过水热法成功合成并分离得到两种新型异金属三维配位聚合物：{[Zn3Mn1.5(bpe)(bba)4(Hbba)]·bpe}n（记为Mn−Zn）与{[Zn2Pr(bpe)(bba)3(Hbba)]·H2O}n（记为Pr−Zn）。两种配合物分别以3d-3d簇与3d-4f簇作为次级结构基元(secondary building units)构建而成，这代表了首例针对三维异金属金属有机框架(Metal-Organic Frameworks, MOFs)的模板合成策略。