Acta Cryst. (2002). E58, m378-m380  [ doi:10.1107/S1600536802011297 ]

Tetrasodium tetrahydrofuran-trans-cis-trans-tetracarboxylate pentahydrate

J. C. Barnes

Abstract: In Na₄[C₄H₄O(COO)₄]·5H₂O (or 4Na⁺·C₈H₄O₉^4-·5H₂O), the anions are connected by hydrogen bonds to water molecules to form bilayers of open columns. Three of the sodium ions are located inside these columns. The final sodium ion interconnects the bilayers of anions. Three of the sodium ions have distorted octahedral coordination, the other has a trigonal pyramidal environment. The ligands are O atoms belonging to water, carboxylate groups or, in one case, the furan ring. The Na-O distances are between 2.303  (2) and 2.596  (3)  Å.

Online 29 June 2002

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