Synthesis, crystal structure, and photoluminescent property of a novel heterobimetallic Zn(II)–Ag(I) cyano-bridged coordination polymer incorporating a pentameric unit image assembled by argentophilic interaction

A new photoluminescent heterobimetallic Zn(II)–Ag(I) cyano-bridged coordination polymer, [Ag5Zn2(tren)2(CN)9] (tren = tris(2-aminoethyl)amine) (1), has been synthesized and structurally characterized. It features rare linear pentameric unit of dicyanoargentate(I) ions assembled by d10–d10 interaction as building blocks. Solid state emission spectrum of 1 shows strong ultraviolet luminescence with emission peak in the range of 376 nm.