A New Phase of Sodium Succinate Hexahydrate

The title compound, 2Na⁺.C₄H₄O₄^2-.6H₂O, is made up of chains parallel to the b axis, in which Na-[OH₂]₂-Na-[C₄H₄O₂]-Na-[OH₂]₂-Na units are mono-bridged by water molecules. The two central C atoms of the succinate ion are disordered over two positions; the dihedral angles between the carboxylate group and the C-C-C-C backbone in each of its disorder positions are 5.7 (3) and 64.0 (2)°.

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