A novel luminescent three-dimensional Ag(I) complex with 3-fold interpenetrating (3,8)-connected nets

A novel luminescent Ag(I) coordination polymer, [Ag3(cpterpy)2]n·nNO3 (1) (Hcpterpy = 4-(4-carboxyphenyl)-2,2:4′,4-terpyridine), is built-up from Ag(I) ions and terpyridyl-carboxylate ligands with unusual three different coordination modes. The dinuclear [Ag2O2] units with cpterpy- ligands in 1 are linked to form 2D wave-like layers and further connected by [Ag4O6] units into a 3D network, which features 3-fold interpenetrating (3,8)-connected nets with a (41264812)(462)(462) topology. Complex 1 exhibits interesting solid-state photoluminescence and high thermal stability.