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以2,6-双(2-吡嗪基)吡啶-4-对苯甲酸和MnCl_2为原料,在水热条件下合成了二维锰(Ⅱ)配位聚合物[Mn_2(bppc)_4(H_2O)]_n·2nH_2O,并用元素分析、红外光谱、X射线单晶衍射对此配位聚合物进行了表征,测定结果表明,晶体属于单斜晶系,P2(1)/c空间群,晶胞参数为:a=10.3918(9)nm,b=24.519(2)nm,c=7.0140(6)nm,α=90°,β=105.0890(10)°,γ=90°。此配位聚合物中MnII之间通过配体中吡嗪环上的氮和羧基氧的桥连形成一维链状结构,一维链再通过羧基基团上的氧的进一步桥连形成二维结构。另外,热重分析表明,此配位聚合物具有较好的热力学稳定性。
Two-dimensional manganese (Ⅱ) coordination polymer [Mn_2 (bppc) _4 (H_2O) was synthesized under hydrothermal conditions using 2,6-bis (2-pyrazinyl) )] _ n · 2nH_2O. The coordination polymers were characterized by elemental analysis, IR and single crystal X-ray diffraction. The results show that the crystal belongs to the monoclinic space group P2 (1) / c, The parameters are: a = 10.3918 (9) nm, b = 24.519 (2) nm, c = 7.0140 (6) nm, α = 90 °, β = 105.0890 (10) °, γ = 90 °. In the coordination polymer, MnII forms a one-dimensional chain structure through bridging nitrogen and carboxyl oxygen on the pyrazine ring in the ligand, and the one-dimensional chain is further bridged by the oxygen on the carboxyl group to form a two-dimensional structure. In addition, thermogravimetric analysis shows that the coordination polymer has good thermodynamic stability.