The effect of bidentated phosphanes upon thiosaccharinate coordination in ternary silver and copper complexes is analyzed. Three solid silver and copper-diphosphanes complexes with thiosaccharinate as counter anion Ag(tsac)(dppe)(CH sub(3CN)) sub(n) ( 1), {Cu(tsac)(dppe)} sub(2( mu -dppe)) super(.)4CH sub(3CN ( 2) and Ag) sub(2)(tsac) sub(2(dppm)) sub(3) ( 3) (tsac: thiosacharinate anion, dppm: bis(diphenylphosphanyl)methane, dppe: bis(diphenylphosphanyl)ethane) were synthesized and fully characterized by means of spectroscopic techniques (FTIR, UV-Visible, and super(1H, ) super(3)1P and super(13CNMR). The crystal structures of complexes 1 and 2 were solved applying single crystal X-ray diffraction techniques. Complex 1 shows a 1-D polynuclear arrangement with dppe molecules bridging Ag(I) centers. Complex 2 is built by dinuclear units with two chelating and one bridging dppe molecules.)