具有纳米孔洞的三维超分子配合物{[Pr（dipic）（H₂O）₄]（ClO₄）}_∞的合成与结构表征

【作者】 张泽锋； 谢承志； 王晓青； 沈光球； 沈德忠；

【机构】 清华大学化学系；

【摘要】 合成了具有纳米孔洞的三维超分子配合物{[Pr(dipic)(H2O)4](ClO4)}∞(H2dipic=2,6-吡啶二甲酸),利用X射线衍射法测定了单晶结构。晶体属立方晶系,空间群为Pa-3,a=20.493(6)A,b=20.493(6)A,c=20.493(6j A,V=8606(4)A3,Z=24。晶体由九配位的镨离子单元作为骨架堆积而成为三维结构,其中每六个镨离子单元围成一个二十四元环,每十二个镨离子单元进一步构成一个具有纳米级孔洞的新奇的五面体。更多还原

【Abstract】 A novel 3D supermolecular complex {[Pr(dipic)(H2O)4](ClO4))∞(H2dipic = pyridine-2,6-dicarboxylic acid) with nanometer-sized hollows was synthesized and its crystal structure has been determined by X-ray diffraction. The compound crystallized in the Cubic space group Pa-3, with cell parameters: a = 20.493(6) A, b = 20.493(6) A, c = 20.493(6)A, V = 8606(4) A3 and Z = 24. The complex shows a polymeric structure of three-dimensional (3D) infinite framework,consisted of nine-coordinated Pr(Ⅲ) units. Six Pr(Ⅲ) units comprised a 24-membered ring, and moreover twelve Pr(Ⅲ) units constructed a novel pentahedron comprising nanometer-sized hollow.更多还原