Crystal structure of [Ag(NH3)3]2[Ag(NH3)2]2[SnF6]F2, a compound showing argentophilic interactions

Abstract

Bis[triamminesilver(I)] bis[diamminesilver(I)] hexafluoridostannate(IV) difluoride, [Ag(NH3)3]2[Ag(NH3)2]2[SnF6]F2, was obtained in the form of colourless crystals from the reaction of CsAgSnF7 in anhydrous ammonia. Two different ammine complexes of silver(I) are present in the structure, i.e. a linear diammine and a T-shaped triammine complex. The ammine silver(I) complexes show Ag...Ag distances in the range of argentophilic interactions. In the crystal, several N—H...F hydrogen bonds are present between the complex cations and the SbF6− and F− anions, leading to the formation of a three-dimensional network.

Keywords

• crystal structure
• silver
• argentophilic interactions
• fluorides
• ammine ligand