Bis[μ-4-(1H-imidazol-3-ium-1-yl)benzoato-κ(2) O:O′]bis­[(methanol)tris­(nitrato-κ(2) O,O′)terbium(III)]

In the centrosymmetric dinuclear title complex, [Tb(2)(NO(3))(6)(C(10)H(8)N(2)O(2))(2)(CH(3)OH)(2)], the Tb atoms are bridged by the carboxyl­ate groups of the two 4-(1H-imidazol-3-ium-1-yl)benzoate (iba) ligands. The iba ligand adopts a zwitterionic form with a protonated imidazole group. The Tb atom adopts a distorted tricapped trigonal–prismatic coordination geometry and is coordinated by six O atoms of three chelating nitrate ions, one O atom of the methanol mol­ecule and two O atoms of two iba ligands. The intra­molecular Tb⋯Tb separation is 5.1419 (3) Å. O—H⋯O and N—H⋯O hydrogen bonds connect complex mol­ecules into a two-dimensional network.