Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Renmin Street No. 5268, Changchun, Jilin 130024, PR China.
Dalton Trans. 2013 Apr 28;42(16):5812-7. doi: 10.1039/c3dt32855d.
An unprecedented organic-inorganic hybrid germanoniobate compound Na4[Cu(en)2(H2O)2]5[Na6Ge8Nb32O108H8(OH)4]·41H2O (1) was synthesized under the hydrothermal condition. In compound 1, the {Nb16} cage containing four {GeO4} tetrahedra in its internal cavity results in a heteropolyniobate anion H4Ge4Nb16O54(OH)2 ({Ge4Nb16}), which is connected by a {Na6} cluster into the first germanoniobate-based sandwich-type structure. Further, the sandwich germanoniobates are connected by [Na2Cu(en)2O6H8] groups into a porous network with one dimensional channels along the a-axis. Photocatalytic study reveals that compound 1 exhibits good photocatalytic activity for the degradation of methylene blue.
在水热条件下合成了一种前所未有的有机-无机杂化锗铌酸盐化合物 Na4[Cu(en)2(H2O)2]5[Na6Ge8Nb32O108H8(OH)4]·41H2O（1）。在化合物 1 中，{Nb16}笼体在其内部空腔中包含四个{GeO4}四面体，导致形成杂多铌酸盐阴离子H4Ge4Nb16O54(OH)2 ({Ge4Nb16})，该阴离子通过{Na6}簇连接成第一个基于锗铌酸盐的夹层型结构。此外，夹层型锗铌酸盐通过[Na2Cu(en)2O6H8]基团连接成具有沿 a 轴一维通道的多孔网络。光催化研究表明，化合物 1 对亚甲基蓝的降解表现出良好的光催化活性。
