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Lithium aspirinate hemihydrate

Arlin, Jean-Baptiste and Addison, Fiona and Kennedy, Alan R. (2007) Lithium aspirinate hemihydrate. Acta Crystallographica Section C: Crystal Structure Communications, 63. M563-M565. ISSN 0108-2701

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The title compound {systematic name: catena-poly[ lithium(I)-mu(3)-acetylsalicylato-hemi-mu(2)-aqua]}, {[Li(C9H7O4)]center dot 0.5H(2)O}(n), is the hemihydrate of the lithium salt of aspirin. The carboxylate groups and water molecules bridge between Li atoms to form a one-dimensional coordination chain composed of two distinct ring types. The water O atom lies on a twofold axis. Hydrogen bonding between water donors and carbonyl acceptors further links the coordination chains to form a sheet structure.