A novel two-dimensional silver(I) saccharinato coordination polymer constructed from weak Ag⋯C interactions: Synthesis, IR spectra and X-ray structure

A new dinuclear silver(I)-saccharinato (sac) complex with acetonitrile (MeCN), [Ag2(sac)2(MeCN)2]n has been synthesized and characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffraction. The silver(I) ions are doubly bridged by two sac ligands, leading to a short argentophilic contact of 2.9074(3) Å. Each silver(I) ion exhibits a square-planar coordination geometry including the Ag–Ag bonds. The individual dimeric molecules are extended into a two-dimensional layered structure by weak Ag⋯Csac (η2) interactions of ca. 3.2 Å. These interactions were discussed and compared with those found in the first silver(I)-sac complex [Ag(sac)]n.