Hydrothermal Assembly, Structural Diversity, and Photocatalytic Characterization of Two Polyoxometalates-Based Hybrid CuII and CuI Coordination Polymers with 2,6-(1,2,4-Triazole-4-yl)pyridine

In this work, under hydrothermal conditions, two novel polyoxometalates (POMs)-based Cu(II)and Cu(I)hybrid materials with 2,6-(1,2,4-triazole-4-yl)pyridine (L-1), namely yellow block crystals [Cu-2(L-1)(2)(Mo4O13)] (1) and blue block crystals [Cu-2(L-1)(3)(H2O)(2)(Mo4O13)(2)] (2) have been designed and synthesized. These POM-based Cu(II)and Cu(I)hybrid materials1-2have been determined by single crystal X-ray diffraction analyses. In1, these Mo(8)O(26)(4-)anions and Cu(I)centers are inter-linked by bidentate L-1, which are arranged into the 1 D POMs-based Cu(I)hybrid metal-organic framework. In2, these L(1)ligands bridge neighboring Cu(II)centers and Mo(8)O(26)(4-)anions, which ultimately form the unique 3 D POM-based Cu(II)hybrid coordination framework of2.Photocatalytic activities for decomposition of different organic dyes (Rhodamine B (RhB), methylene blue (MB) and methyl orange (MO)) have been investigated for2, indicating that2are good candidates for the photocatalytic degradation of these organic dyes.