A new 3D framework based on reduced Wells-Dawson arsenotungstates as eight-connected linkages
2014
A new hybrid compound based on reduced Wells-Dawson arsenotungstates as eight-connected linkages, [Cu4(btb)6(H2O)2][As2WV2WVI16O62]·10H2O (1) (btb = 1,4-bis(1,2,4-triazol-1-y1)butane) has been synthesized under hydrothermal conditions. Structural analysis shows that 1 displays a 3D POMOF structure consisting of two crystal distinct motifs: a 3D MOF architecture and an eight-connected As2W18 cluster. It is worth mentioning that the 3D MOF architecture possesses two kinds of channels (A and B). The eight-connected As2W18 clusters as guests occupy the B channels and are incorporated within the MOF to achieve a 3D POMOF architecture with a novel (32·42·52)(33·45·53·64)2(36·49·59·64) topology. In addition, the electrochemical studies show that 1 has good electrocatalytic activities toward reduction of both hydrogen peroxide and nitrite molecules ascribed to W-centers. The photocatalytic properties of 1 indicate that the title compound presents a good degradation activity and may be a potential photocatalyst for oxidative decomposition of methylene blue dye.
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