Bis(μ-3-nitro­benzene-1,2-dicarboxyl­ato)-κ⁴O¹,O²:O¹,O^1′;κ⁴O¹,O^1′:O¹,O²-bis­[triaqua­(6-carb­oxy-2-nitro­benzoato-κ²O¹,O⁶)neodymium(III)] dihydrate

The title complex, [Nd₂(C₈H₃NO₆)₂(C₈H₄NO₆)₂(H₂O)₆]·2H₂O, consists of dimeric units related by an inversion center. The Nd^III atom is nine-coordinated by three O atoms from water mol­ecules and six from carboxyl­ate atoms. The 1,2-dicarboxylate acid molecules are in a single and double deprotonation stage and exhibit two coord­in­ation modes, viz. μ₂-(κ⁴, O¹: O²: O²: O³) and μ₁-(κ², O²: O³), which are responsible for the dimeric structure framework. The dimeric structure is then assembled into a three-dimensional supramolecular framework via O—H...O hydrogen bonds.