Silver(I) Complexes with Azaheterocyclic Ligands (bipy, phen) and Perchloro-closo-Borate Anions [B_nCl_n]^2– (n = 10, 12)

In this study, the complexation of silver(I) with azaheterocyclic ligands (bipy, phen) in the presence of perchlorinated borate anions, [B₁₀Cl₁₀]^2– and [B₁₂Cl₁₂]^2–, was investigated in acetonitrile. Complexes with the general formula [Ag₂L₄][B_nCl_n] (L = bipy, phen; n = 10, 12) were successfully isolated. The final compounds were characterized using elemental analysis and IR spectroscopy. The structures of the [Ag₂(bipy)₄][B_nCl_n] (n = 10, 12) complexes were elucidated via X-ray diffraction (CCDC nos. 2325088, 2358488). It was determined that the compounds consist of either a binuclear cationic silver(I) complex with azaheterocyclic ligands, [Ag₂(bipy)₄]²⁺, or two mononuclear complexes, {[Ag(bipy)₂]₂}²⁺, with the boron cluster anions forming the anionic part of both complexes. Additionally, weak argentophilic Ag…Ag interactions were observed within the structures.