Abstract
The asymmetric unit of the title coordination polymer, {[Co2(C10H2O8)(H2O)4]·2H2O}n, contains two crystallographically distinct CoII cations, located on inversion centers. Each CoII cation exists in an octahedral coordination environment formed by two water molecules and four carboxylate groups. The deprotonated benzene-1,2,4,5-tetracarboxylic acid ligand, with the center of the benzene ring located on an inversion center, bridges CoII cations to form a (3,4)-connected three-dimensional network that is topologically related to Pt3O4 (waserite). O—H⋯O hydrogen bonding between coordinated water molecules and carboxylate groups helps to stabilize the crystal structure. One water molecules is disordered over two positions, with almost equal occupancies.
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