Synthesis and structure of silver complexes: [Ph3PC3H5-cyclo]2+[AgBr3]2–, [Ph3PC3H5-cyclo]n+[Ag2Br3]nn−

Abstract

The reaction of triphenylcyclopropylphosphonium bromide with silver bromide (2: 1 or 1: 2 molar ratio) gave the complexes [Ph₃PC₃H₅-cyclo]₂⁺[AgBr₃]^2- (I) and [Ph₃PC₃H₅-cyclo]_n⁺[Ag₂Br₃]_n^n- (II). According to X-ray diffraction data (CIF files CCDC no. 1010694 (I), 999903 (II)), the complexes consist of tetrahedral triphenylcyclopropylphosphonium cations and monomeric [AgBr₃]^2– (I) or polymeric [Ag₂Br₃]_n^n- anions (II). The C.N.(Ag⁺) in I is 3 and that in II is 4; The C.N.(Br^–) in the polymeric anion is 4 or 2. The structural organization of the crystals is formed by weak hydrogen bonds.