Hexaaquacobalt(II) bis(5-acetyl-2-hydroxybenzoate) dihydrate

Abstract

In the title compound, [Co(H2O)6](C9H7O4)2·2H2O, the Co2+ cation lies on a twofold rotation axis and is coordinated by six water molecules in a distorted octahedral geometry. In the 5-acetyl-2-hydroxybenzoate anion, the hydroxy group links with the carboxylate group via an intramolecular O—H...O hydrogen bond and the acetyl group is twisted to the benzene ring at a dihedral angle of 16.99 (12)°. In the crystal structure, the cations, anions and water molecules are linked by extensive O—H...O hydrogen bonding.