μ-Oxalato-κ⁴O¹,O²:O^1′,O^2′-bis­[aqua­(2,2′-bipyridine-κN)(nitrato-κ²O,O′)lead(II)]

The title compound, [Pb₂(C₂O₄)(NO₃)₂(C₁₀H₈N₂)₂(H₂O)₂], was synthesized hydro­thermally. The binuclear complex mol­ecule is centrosymmetric, the inversion centre being located at the mid-point of the oxalate C—C bond. The Pb^II ion is hepta­coordinated by the O atom of one water mol­ecule, two oxalate O atoms, two nitrate O atoms and two 2,2′-bipyridine N atoms, forming an irregular coordination environemnt. Inter­molecular O—H...O hydrogen bonds between water mol­ecules and oxalate and nitrate ions result in the formation of layers parallel to (010). π–π inter­actions between pyridine rings in adjacent layers, with centroid–centroid distances of 3.584 (2) Å, stabilize the structural set-up.