A novel lamella 2D Ag(I) coordination polymer of graphite-like structure featuring short interlayer distance

The reaction of Ag2O with a mixture of benzene-1,3,5-tricarboxylic acid (H3BTC) and 2-aminopyrazine (APYZ) under the ammoniacal conditions gives rise to a novel metal–organic coordination polymer Ag6(BTC)2(APYZ)6·9H2O (1). The structure of 1 possesses a high ordered lamella 2D structure with an interesting graphite-like 63 net which is comprised of Ag4 and Ag6 fused hexagonal rings respectively. 1 exhibits photoluminescence maximized at 416 nm upon 330 nm excitation at room temperature, which may be mainly ascribed to ligand-to-ligand charge transfer (LLCT). Semiconducting behavior was also measured at ambient temperature with σ values of 5.56 × 10−7 S cm−1 based on the π–π stacking and Ag(I)–π interactions.