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以NiCl2、(NH4)6Mo7O24、NaOH及柔性配体1,3-二(1,2,4-三氮唑-1-)丙烷(Btp)为原料,采用水热技术合成了一个结构新颖的基于多金属氧酸盐(多酸)[Mo8Na2O28]6–的二维有机-无机杂化配位聚合物[Ni(Btp)2(H2O)Mo8Na2O26(μ2-OH)2]0.5·H2O(1).通过元素分析、IR、TG和X-射线单晶衍射等对化合物1进行了表征.X-射线单晶结构分析表明,该化合物属于单斜晶系,P21/c空间群,晶胞参数a=11.6871(8)?,b=21.7506(15)?,c=14.9208(8)?,Z=4,R1=0.0487,wR2=0.1409.化合物1中含有一种新型的多酸阴离子簇[Mo8Na2O28]6–,可以看作是由β-[Mo8O26]4–转化成的具有[V10O28]6–结构特征的新型多酸.该多酸被镍和Btp形成的二维(2D)层夹在中间,形成一种夹心型的2D柱状层结构.二维柱状层之间相互穿插形成了一个二维→三维(2D→3D)的互锁结构,柱状层之间的氢键作用又进一步稳固了整个框架.此外,该化合物具有较好的电催化和光催化性能.
A novel structure based on NiCl2, (NH4) 6Mo7O24, NaOH and flexible ligand 1,3-bis (1,2,4-triazolo-1) propane (Btp) 2-D organic-inorganic hybrid coordination polymer of polyoxometalate (polyacid) [Mo8Na2O28] 6- [Ni (Btp) 2 (H2O) Mo8Na2O26 (μ2-OH) 2] 0.5 · H2O (1). Compound 1 was characterized by elemental analysis, IR, TG and X-ray single crystal diffraction, etc. The X-ray single crystal structure analysis showed that the compound belongs to the monoclinic space group P21 / c with unit cell parameters a = 11.6871 (8) ?, b = 21.7506 (15) ?, c = 14.9208 (8) ?, Z = 4, R1 = 0.0487 and wR2 = 0.1409. Compound 1 contains a novel polyoxoanion cluster [Mo8Na2O28] 6 - can be regarded as a novel polyacid with the structural feature of [V10O28] 6-, which is converted from 4- [Mo8O26] 4-, and is sandwiched by two-dimensional (2D) layers of nickel and Btp A sandwiched 2D columnar structure consists of two-dimensional columnar layers interpenetrating to each other to form a 2D → 3D (2D → 3D) interlocking structure. The hydrogen bonding between the columnar layers further stabilizes the entire frame. In addition, the compound has good electrocatalytic and photocatalytic properties.