以-Keggin型多金属氧酸盐[PMo12O40]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)(H2O)4][PMo12O40]·2.75H2O (HNU-13) (H2BMBCP·Cl2=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[PMo12O40]3-与H2BMBCP·Cl2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 two-dimensional Gd (Ⅲ) coordination polymer [Gd(BMBCP)(H2O)4][PMo12O40]·2.75H2O (H2BMBCP·Cl2=1,4-bis (3-carboxylic acid pyridyl-1-methylene) benzene dichloride) (HNU-13) was successfully synthesized by using-Keggin type polyoxometallate [PMo12O40]3-as template in hydrothermal condition.The structure was characterized by single crystal X-ray diffractometer, and the compound was characterized by X-ray powder diffraction (PXRD), Fourier transform infrared spectroscopy (IR) and thermogravimetric analysis (TG).The results show that the structure of the compound is crystallized in the monoclinic system P2(1)/n space group with unit cell parameters a=1.4291 nm,b=1.3772 nm,c=2.8430 nm,α=90.00°, β=91.154°, γ=90.00°, and Z=4.It is worth noting that a layered 4,4-lattice structure is formed by the electrostatic interaction of [PMo12O40]3-with H2BMBCP·Cl2 ligands to form right and left handed helical chains.
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