Two-dimensional supramolecular co-ordination compounds of silver(I) with box structures

Silver(I) complexes of 2,3,5,6-tetrakis(methylsulfanyl)pyridine (tmp), [Ag- 3(tmp)(4)][ClO4](3). C3H6O 1 and [Ag-2(tmp)(2)][C2F5CO2](2) 2, have been pr epared and their molecular structures determined by X-ray crystallography. In both complexes two tmp ligands are positioned face to face by two Ag ato ms and form a box structure. In 1 three types of silver(I) ion are present depending on the co-ordination numbers. One tmp molecule acts as a bridge b etween box structures leading to a tape arrangement. The pi-pi stackings be tween pyridine rings give a two-dimensional network. In 2, by contrast, the silver(I) ion has a trigonal planar environment with three thioether S ato ms; each tmp acts as a ligand bridging metal centres resulting in a two-dim ensional sheet.