Ionic liquid based synthesis of the dinuclear complex Ag2I2(DPEphos)2 with Ag–Ag interaction

The reaction of equimolar amounts of AgI and the ligand bis(2-(diphenylphosphino)phenyl)ether (DPEphos) in the ionic liquid [NMe(n-Bu)3]2[N(Tf)2] yields the dinuclear complex Ag2I2(DPEphos)2. Herein, each silver atom is coordinated by two iodide anions and two DPEphos ligands, resulting in a distorted tetrahedral coordination. Moreover, Ag–Ag interaction (293.7 pm) is observed and represents the shortest bonding observed for dinuclear silver phosphine complexes.