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In the title coordination polymer, [Dy2(C6H8O4)(C2O4)2(H2O)2]n, the asymmetric unit consists of one Dy3+ cation, one half of an adipate anion, two halves of oxalate anions and one coordinating water mol­ecule. The adipate and oxalate ions are located on centres of inversion. The Dy3+ cation has a distorted tricapped trigonal–prismatic geometry and is coordinated by nine O atoms, four belonging to three adipate anions, four to two oxalate anions and one from an aqua ligand. The cations are bridged by adipate ligands, generating a two-dimensional network parallel to (010). This network is further extended into three dimensions by coordination of the rigid oxalate ligands and is further consolidated by O—H...O hydrogen bonds. A part of the adipate anion is disordered over two positions in a 0.75:0.25 ratio.
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