Crystal structure of (μ-1,4-di­carb­oxy­butane-1,4-di­carboxyl­ato)bis­[bis­(tri­phenyl­phosphane)silver(I)] di­chloro­methane tris­olvate

The mol­ecular structure of the tetra­kis(tri­phenyl­phosphan­yl)disilver salt of butane-1,1,4,4-tetra­carb­oxy­lic acid, [Ag(2)(C(8)H(8)O(8))(C(18)H(15)P)(4)]·3CH(2)Cl(2), crystallizes with one and a half mol­ecules of di­chloro­methane in the asymmetric unit. The coordination complex exhibits an inversion centre through the central CH(2)—CH(2) bond. The Ag(I) atom has a distorted trigonal–planar P(2)O coordination environment. The packing is characterized by inter­molecular T-shaped π–π inter­actions between the phenyl rings of the PPh(3) substituents in neighbouring mol­ecules, forming a ladder-type superstructure parallel to [010]. These ladders are arranged in layers parallel to (101). Intra­molecular hydrogen bonds between the OH group and one O atom of the Ag-bonded carboxyl­ate group results in an asymmetric bidendate coordination of the carboxyl­ate moiety to the Ag(I) ion.