Two inorganic-organic hybrid polyoxotungstates constructed from tetra-Zr IV-substituted sandwich-type germanotungstates functionalized by tris ligand

摘要

AbstractTwo tris-functionalized Zr4IV-substituted germanetungstates H9KNa2[Zr4(μ3-O)2(tris)2(α-GeW10O37)2]·26H2O (1) and H2K6Na4[Zr4(μ3-O)2(tris)2(α-GeW10O37)2]·20H2O (2) (tris=tris(hydroxymethyl)aminomethane) have been made under mild hydrothermal conditions and characterized by elemental analysis, IR spectra, diffuse reflectance spectra, thermogravimetric analysis, single-crystal X-ray diffraction and powder X-ray diffraction, respectively.1–2possess similar sandwich-type polyoxoanion structure built by a tetra-ZrIVcluster and two divacant [α-GeW10O37]10?building blocks.1and2represent the first [Zr4(μ3-O)2(tris)2]10+-substituted germanotungstates functionalized by tris ligands with O– and N-donors.Graphical abstractTwo tetra-ZrIV-substituted sandwiched polyoxotungstate hybrids functionalized by tris ligands were made and characterized, which contain the same [Zr4(μ3-OH)2(H2O)2(tris)2(α-GeW10O37)]12?clusters, showing 2D layer with 44·62network and 3D framework with 412·612·84network, respectively.Display OmittedHighlights?Two new organic–inorganic hybrid sandwiched polyoxotungstates functionalized by tris ligands were hydrothermally made.?Representing the first [Zr4(μ3-O)2(tris)2]10+-substituted g