Four inorganic-organic hybrid octa-Cu cluster sandwiched polyoxotungstates (POTs), [Cu(HO)(en)(B-α-HSiWO)] (), [Cu(HO)(en)(B-α-HGeWO)] (), K[Cu(en)(B-α-HSiWO)]·6HO (), and K[Cu(en)(B-α-HGeWO)]·2HO () (en = ethylenediamine), were hydrothermally made and characterized by single-crystal X-ray diffraction, infrared spectra, powder X-ray diffraction, and thermogravimetric analysis, respectively. Structure analysis reveals that the polyoxoanion of / is a discrete dimer built by two trivalent Keggin [B-α-XWO] (X = Si/Ge) fragments and one octa-Cu cluster, whereas and display a two-dimensional network built by octa-Cu-sandwiched POT units via substitution of coordinated water on polyanions of and and further expand into a three-dimensional framework via K cation bridges. Ultraviolet-visible diffuse reflectance spectra reveal that are potential semiconductor materials. Moreover, its visible light-driven catalytic H evolution activity, electrochemical properties, catalysis for oxygenation reactions of thioethers, and magnetic behaviors have been investigated in detail.
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http://dx.doi.org/10.1021/acs.inorgchem.1c01081 | DOI Listing |
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