A Silicotungstate-Based Silver(I) Compound with Octanuclear Core: Synthesis, Crystal Structure and Luminescent Property.

A novel silicotungstate-based silver(I) compound, formulated as [{Ag₈(H₃mtz)₁₂}{SiW₁₂O₄₀}₂]·8H₂O (1) (H₃mtz = 3-Mercapto-1,2,4-triazole) has been hydrothermally synthesized. This compound was identified by the single-crystal X-ray diffraction, and also characterized by FT-IR, UV, TG, PXRD and elemental analyses. The data show that it possesses the octanuclear silver(I) clusters and the anionic silicotungstates, which were connected via the hydrogen bonds and weak Ag-O bonds. Interestingly, the estimated optical bandgap of compound 1 is 1.95 eV, which falls into the range of semiconductors. [ABSTRACT FROM AUTHOR]