Tetra-μ-benzoato-κ(4) O:O′;κ(3) O:O,O′;κ(3) O,O′:O′-bis­[(benzoato-κ(2) O,O′)(1,10-phenanthroline-κ(2) N,N′)terbium(III)] benzoic acid disolvate

The asymmetric unit of the title complex, [Tb(2)(C(7)H(5)O(2))(6)(C(12)H(8)N(2))(2)]·2C(7)H(6)O(2), consists of one-half of the complex mol­ecule, which lies on a crystallographic inversion centre, and one benzoic acid solvent mol­ecule. The two Tb(III) ions are linked by four bridging benzoate ions, with a Tb⋯Tb distance of 3.9280 (6) Å. Additionally, each Tb(III) ion is coordinated by one phenanthroline heterocycle and a bidentate benzoate ion. The irregular nine-coordinated geometry of the Tb(III) ion is composed of seven O and two N atoms. The mol­ecular structure is stabilized by intra­molecular C—H⋯O hydrogen bonds. In the crystal structure, mol­ecules are linked into chains along the a axis by inter­molecular C—H⋯O hydrogen bonds. The crystal structure is further stabilized by inter­molecular C—H⋯O and C—H⋯π inter­actions. Weak π–π inter­actions are also observed [centroid–centroid distances = 3.6275 (14)–3.6604 (14) Å].