Cerium 3,5-Dinitrobenzoate Dihydrate

In the crystal structure of the title molecule, catena-poly[[tetraaqua-1κ²O,2κ²O-tetrakis(μ-3,5-dinitrobenzoato-O:O') dicerium]-bis(μ-3,5-dinitrobenzoato-O:O')], [Ce₂(C₇H₃N₂O₆)₆(H₂O)₄], cerium ions are bridged by carboxylate groups to form linear polymeric chains. The coordination around Ce is eightfold involving six O atoms from six carboxylate groups and two water O atoms. Within the polymeric chains, only the bridging type of bonding exists. Ce—O distances vary between 2.400 (5) and 2.661 (5) Å, resulting in a strongly distorted square-antiprism arrangement around Ce.

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