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metal-organic compounds
The title complex salt, [Co(H2O)6](C5H5O4)2, has been investigated by means of single-crystal X-ray diffraction. The structure of this compound is composed of discrete [C3H4(COO)(COOH)]- anions and [Co(H2O)6]2+ cations. The geometrical parameters of the anion are comparable to those of the diammonium salt.