New adducts of silver(I) halides, AgX (X = Cl, Br), with bidentate phosphine ligands: syntheses and molecular structures of [Ag-3(mu(3)-Cl)(2)(mu-dppm)(3)] [PF6] , [Ag-3(mu(3)-Br)(2)(mu-dppm)(3)][AgBr2], {[Et4N][Ag-2 (mu-Br)(3)(mu-dppe)]}(n), [Et4N](2)[(AgCl2)(2)(mu-dppe)], and [(AgCl)(2) (mu-dppp)(2)]

摘要

Interaction of AgCl with bis(diphenylphosphino) methane (dppm) in THF/MeCN in the presence of K[PF6] or [Et4N] Br afforded typical trinuclear cationic trigonalbipyramidal complexes [Ag-3(mu(3)-Cl)(2)(mu-dppm)(3)][PF6] (1) or [Ag-3(mu(3)-Br)(2)(mu-dppm)(3)][AgBr2] (2), respectively. Treatment of AgBr with bis(diphenylphosphino) ethane (dppe) in THF/MeCN in the presence of [Et4N] Br gave a polymeric complex {[Et4N][Ag-2(mu-Br)(3)(mu-dppe)]}(n)(3) with a dinuclear {Ag-2(mu-Br)(3)} core. The reaction of AgCl with dppe or bis(diphenylphosphino) propane (dppp) in THF/MeCN in the presence of [Et4N] Cl resulted in the isolation of a dinuclear anionic complex [Et4N](2)[(AgCl2)(2)(mu-dppe)] (4) with one mu-dppe bridge or a dinuclear neutral complex [(AgCl)(2)(mu-dppp)(2)] (5) with two mu-dppp bridges and a 12-membered ring, respectively. The structures of complexes 1- 5 with the bidentate phosphine ligands were determined by single-crystal X-ray diffraction.