MIXED-HALIDE IODOARGENTATE ANIONS - THE STRUCTURAL CHARACTERIZATION OF (AG3I3CL)-, (AG3I3BR)-, (AG3I3I)

Single-crystal structure determinations are recorded for [Ph3AsMe]+[Ag3I3X]-, X = Cl, Br, I. The three complexes are isomorphous with their recently recorded [Cu3I4]- counterpart. They are also 'isomorphous' with the recently recorded [Ph4P/As]+[Ag3I4]-, crystallizing in a monoclinic P21/c cell with a ≈ 12•5, b ≈ 25•6, c ≈ 8•39 Å, β ≈ 109°, Z = 4 formula units. The anion is an infinite polymer with three distinct metal and four distinct halide sites; the mixed stoichiometry is achieved by displacement of the peripheral halide species. © 1990 ASEG.