Triaqua(pyridine‐2,6‐dicarboxylato)magnesium(II) dihydrate

The reaction of magnesium(II) nitrate hexahydrate with the proton‐transfer compound (pipzH2)(pydc) [pipz is piperazine and pydcH2 is pyridine‐2,6‐dicarboxylic acid] in aqueous solution leads to the formation of the title compound, [Mg(C7H3O4)(H2O)3]·2H2O. The piperazinium cation is not incorporated in this crystal structure. The MgII atom has a distorted octahedral coordination environment. There are many intermolecular O—H...O hydrogen bonds involving the (pydc)2− species and water molecules in the crystal structure.