Abstract
The introduction of polyoxometalates (POMs) into the metal–organic complex synthetic system containing copper ions and bichelate-bridging ligands (bis(3-(2-pyridyl)pyrazole-1-ylmethyl)benzene, bppmb) led to the isolation of three new organic–inorganic hybrid compounds [CuIILo]2H[BW12O40]·4H2O (1), [CuILo]4[SiW12O40]·5H2O (2), and [CuLp]3H2[BW12O40]·5H2O (3) (Lo = 1,2-bppmb and Lp = 1,4-bppmb). All three compounds were hydrothermally synthesized and characterized by elemental analyses, IR spectra, TG analyses, powder X-ray diffraction, and single-crystal X-ray diffraction analyses. In these compounds, the use of Keggin-type POMs induces the formation of a series of new metal–organic secondary building units based on the copper ions and bppmb ligands such as helical chain and chiral Möbius Strip, which further form interesting supramolecular self-assemblies with the polyoxoanions. The degradation of Rhodamine-B (RhB) under UV irradiation with compounds 1–3 as the heterogeneous photocatalysts was investigated, and these compounds show good photocatalytic properties for RhB degradation.
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