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以-Keggin型多金属氧酸盐[PMo_(12)O_(40)]~(3-)作为模板,采用水热法成功合成一例新型二维Gd(Ⅲ)配位聚合物[Gd(BMBCP)(H_2O)_4][PMo_(12)O_(40)]·2.75H_2O(HNU-13)(H_2BMBCP·Cl_2=1,4-双(3-羧酸吡啶基-1-亚甲基)苯二氯)。通过单晶X-射线衍射仪确定其结构,并通过X-射线粉末衍射(PXRD),傅里叶红外光谱(IR)和热重分析仪(TG)对其进行表征。结果表明,化合物结构结晶于单斜晶系,P2(1)/n空间群,晶胞参数为a=1.4291 nm,b=1.3772 nm,c=2.8430 nm,α=90.00°,β=91.154°,γ=90.00°,Z=4。值得注意的是,由于[PMo_(12)O_(40)]~(3-)与H_2BMBCP·Cl_2配体的静电作用,从而形成左右手螺旋链,进一步的构筑为层状4,4-网格结构。
A new type of 2D Gd (Ⅲ) coordination polymer [Gd (BMBCP)) was successfully synthesized by hydrothermal method using -Keggin type polyoxometalate [PMo_ (12) O_ (40)] ~ (H_2O_4) [PMo_ (12) O_ (40)] · 2.75H_2O (HNU-13) (H_2BMBCP · Cl_2 = 1,4-bis ). Its structure was confirmed by single crystal X-ray diffractometry and characterized by X-ray powder diffraction (PXRD), Fourier transform infrared (IR) and thermogravimetric analysis (TG). The results show that the structure of the compound crystallizes in the monoclinic space group P2 (1) / n with unit cell parameters of a = 1.4291 nm, b = 1.3772 nm, c = 2.8430 nm, α = 90.00 ° and β = 91.154 °, γ = 90.00 °, Z = 4. It is noteworthy that due to the electrostatic interaction between [PMo_ (12) O_ (40)] ~ (3-) and H_2BMBCP · Cl_2 ligands, a left-handed helical chain is formed and a layered 4,4- .