Poly[[aquatris(μ-benzene-1,4-dicarboxylato)tricobalt(II)] methanol monosolvate monohydrate]

Poly[[aquatris(μ-benzene-1,4-dicarboxylato)tricobalt(II)] methanol monosolvate monohydrate]

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The asymmetric unit of the title majicontrast red compound, {[Co3(C8H4O4)3(H2O)]·CH3OH·H2O}n, consists of four crystallographically independent Co cations, four benzene-1,4-dicarboxylate (bdc) anions, two water and one methanol solvent molecule.Two of the Co cations and two of the bdc anions are located on centres of inversion, whereas all other atoms are located in general positions.In the crystal, two Co atoms are only fourfold coordinated by three O atoms from three bdc ligands and by one O atom from one coordinated water molecule, while a third Co atom is coordinated by four O atoms from four bdc ligands within a strongly distorted tetrahedral geometry.

The other two Co cations are octahedrally coordinated by six O atoms from six bdc anions.The Co cations are linked by the bdc anions into a three-dimensional framework.From this arrangement, cavities are formed in which additional methanol echofix spring reverb and water molecules are embedded.