Synthesis and structure of silver complexes [Ph3(i-Pr)P]+2[Ag2I4]2− and [Ph3MeP]+n[Ag3I4]–n

Resumo

Complexes [Ph₃(i-Pr)P]⁺₂[Ag₂I₄]^2- and [Ph₃MeP]⁺_n[Ag₃I₄]^–_n were synthesized by the reaction of alkyl (triphenyl)phosphonium iodides with silver iodide in dimethyl sulfoxide. Triphenylalkylphosphonium cations have a tetrahedral configuration. Silver atoms in binuclear anions [Ag₂I₄]^2- are characterized by trigonal coordination, the iodine coordination number being 2 or 1. In the polymeric anions [Ag₃I₄]^–_n the silver coordination number is 4 and that of iodine, 2, 3, or 4.