Syntheses, structures and luminescence of silver(I) sulfonate complexes with nitrogen-containing ligands

In this paper, three new Ag(I) coordination compounds, namely, AgL(3-iso)2 (1), [Ag4L4(bipy)4]·bipy·CH3CN·6H2O (2) and [Ag10L8(hmt)10(H2O)4]·(L)2·15H2O (3) (where 3-iso = 3-methylisoquinoline, bipy = 4,4′-bipyridine, hmt = hexamethylenetetramine and L = 4-chloro-benzenesulfonate anion), have been synthesized by varying the nitrogen-containing secondary ligands. In compound 1, Ag(I) atoms are coordinated by 3-iso ligands and L anion to generate a discrete molecular structure. For compound 2, when the 3-iso ligand was replaced by bipy, Ag(I) atoms of 2 are linked by bipy ligands to generate a 1D polymeric chain, which are further expanded to a double chain through Ag⋯Ag interaction. In 3, the hmt ligands connect Ag(I) atoms to give a undulate 2D layer. These results indicate that the nitrogen-containing secondary ligands play important roles in the structural formation of the Ag(I) complexes. Moreover, the luminescent properties, elemental analyses and IR spectroscopy of these compounds were also studied.

Graphical abstractThree silver sulfonate coordination complexes have been constructed from three N-donor ligands and 4-chloro-benzenesulfonate anion. The three silver sulfonates exhibit different architectures from 0D chain to 2D frameworks based on N-donor ligands variation. Moreover, the luminescent properties of these compounds were also studied.Figure optionsDownload full-size imageDownload as PowerPoint slide