Abstract
Three metal–organic complexes (MOCs) based on Keggin-type polyoxometalate anions and two organic ligands 1H-Imdazole-2-carboxylic acid (L1) and 1H,1′H-Biimdazole-4,4′-dicarboxylic acid (L2), [Ag2(L1)4][HPMo12O40]·3H2O (1), [Ag2(L1)4][HPW12O40]·H2O (2) and [CuI6Cl4(L2)6][H3PMo12O40]·2NO3 (3), have been synthesized under hydrothermal conditions and structurally characterized by single crystal X-ray diffraction analyses, elemental analyses and IR spectra. Complexes 1 and 2 are isostructural and contain a supramolecular chain with a –ABAB– style. The adjacent one dimensional (1D) chains through hydrogen bonding interactions form a 2D supramolecular layer. In complex 3, there exist double Cl-capped tri-nuclear Cu+ clusters. Furthermore, the photocatalytic and fluorescent properties of complexes 1–3 and electrochemical behavior of complexes 2 and 3 were investigated.
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