Bis(μ-4-hydroxybenzoato-κ2 O:O′)bis[triaquabis(4-hydroxybenzoato)-κO;κ2 O,O′-terbium(III)] decahydrate

The title dinuclear compound, [Tb2(C7H5O3)6(H2O)6]·10H2O, lies on a center of inversion and the two TbIII atoms are bridged by two 4-hydroxybenzoate anions; each metal atom is further coordinated by one monodentate anion and chelated by the third anion. The eight-coordinate geometry approximates a square antiprism. Hydrogen bonds of the O—H⋯O type connect the uncoordinated water molecules to the dinuclear species, forming a three-dimensional network.