Syntheses, structures and fluorescent properties of two silver(I) complexes with 5-sulfo-salicylic acid as ligand templated by alkaline-earth metals

Two silver(I) complexes, [Mg(H2O)6][Ag2(HL)2] (1) and Sr2Ag4(HL)(H2O)14 · 2H2O (2) (H3L = 5-sulfo-salicylic acid), have been synthesized by use of alkaline-earth metals (Mg2+ and Sr2+, respectively) as templates. Single-crystal X-ray diffractions reveal that compound 1 is a 1-D chain polymer built from [Ag2(HL)2] dimers and compound 2 is a 2-D framework constructed from unusual tetramer units of [Ag2(HL)2] dimers. The two complexes are both further linked into 3-D networks by the extensive intermolecular hydrogen bonding interactions.