(μ-2′,6′-Dicarboxy­biphenyl-2,6-dicar­boxylato)bis[(1,10-phenanthroline)silver(I)]

In the dimeric title complex, [Ag(2)(C(16)H(8)O(8))(C(12)H(8)N(2))(2)] or [Ag(2)(H(2)bta)(phen)(2)] (H(4)bta = biphenyl-2,2′,6,6′-tetra­carb­ox­y­lic acid, phen = 1,10-phenanthroline), each Ag(I) ion displays an approximatively planar-trigonal geometry, being surrounded by one chelating phen ligand and one carboxyl­ate O atom from an H(2)bta ligand. Owing to the the presence of crystallographic twofold rotation axes, the four C atoms bisecting the H~2~bta ligand are located on a special position. Each H(2)bta ligand acts as a bis-monodentate ligand, ligating two Ag(I) ions into a dimeric compound. Inter­molecular O—H⋯O inter­actions are observed in the crystal structure.