The Diammine Silver(I) Acetate [Ag(NH3)2]OAc

Silver acetate AgOAc reacts with dry liquid ammonia under the formation of colorless needle-shaped crystals of diammine silver(I) acetate [Ag(NH3)(2)]OAc (1). The compound crystallizes in the monoclinic space group P2(1)/c with a = 8.0205(2), b = 12.4161(3), c = 6.0938(2) angstrom, = 107.741(4)degrees, and V = 577.98(3) angstrom(3) at 123 K with Z = 4. The crystal structure shows the presence of almost linear [Ag(NH3)(2)](+) cations, which are arranged in a corrugated chain of equidistant silver atoms. The Ag-Ag distance is 3.1089(11) angstrom, which falls in the range of argentophilic interactions. After warming to room temperature and removal of the solvent, compound 1 was found unchanged as evidenced by powder X-ray diffraction, thermogravimetric and mass-spectrometric analysis, as well as IR and Raman spectroscopy.