Poly[aqua­(μ3‐benzene‐1,2‐dicarboxyl­ato)(μ2‐hydroxo)indium(III)]

In the title compound, In(C₈H₄O₄)(OH)(H₂O)]_n, the coordination of the In^III ion is composed of six O atoms from three dianionic benzene‐1,2‐dicarboxylate ligands, two hydroxyl groups and one coordinated water mol­ecule in a distorted octa­hedral geometry. The In³⁺ ions are linked by the hydroxyl groups to form zigzag In–OH–In chains, which are further bridged by the benzene‐1,2‐dicarboxylic acid ligands to generate a two‐dimensional layered structure featuring three types of rings (six‐, 14‐ and 20‐membered). Hydrogen bonds between the water mol­ecule and a carboxyl­ate O atom, and between the hydroxyl group and a carboxyl­ate O atom, are observed within the layers. In the crystal packing, there are π–­π stacking inter­actions between the benzene rings of adjacent layers, with a centroid‐to‐centroid distance of 3.668 (3) Å and a dihedral angle of 4.8 (2)°.