“…This signal appeared at around 180 ppm, but only for complexes 2c and 2e is well resolved showing the well-known pattern of two doublets due to coupling constants of 1 J CAg = 185 and 213 Hz. These values of 1 J CAg are in agreement with an homoleptic binding mode of NHC ligands, C-Ag-C, in agreement with the proposed formulation, because larger coupling constants are often observed for heteroleptic binding modes, C-Ag-X or C-Ag-N [40,41]. Additionally, enantiomeric complexes Na 3 [Ag{(S,S)-NHC R } 2 ] (R = Me, 2b; i Pr, 2c) and Na 3 [Ag{(R,R)-NHC R } 2 ] (R = Me, 2b'; i Pr, 2c') were spectroscopically characterized by circular dichroism (CD).…”