New silver(I) coordination polymer containing a rare inorganic graphite-like [AgS]n layer

A new metal-organic coordination polymer, namely [Ag2(H2trzS)2Cl2]n (1, H2trzS = 1H-1, 2, 4,-triazole-3-thiol), has been successfully synthesized under solvothermal conditions and characterized by elemental analysis, FT-IR spectra and powder X-ray diffraction (PXRD). Single crystal X-ray diffraction analysis reveals that 1 features a two-dimensional (2D) layer structure with a rare inorganic graphite-like [AgS]n layer. Optical diffuse reflectance study reveals an optical band gap of 3.83 ev, making it a wide band gap semiconductor. The densities of states (DOS) calculations reveal that the luminescent emission of 1 originates from the intraligand-charge-transfer.