Crystal structure of catena-poly[[di­aqua(4,5-di­aza­fluoren-9-one-κ²N,N′)cadmium]-μ-2-hydroxy-5-sulfonato­benzoato-κ³O¹,O^1′:O⁵]

In the polymeric title compound, [Cd(C₇H₄O₆S)(C₁₁H₆N₂O)(H₂O)₂]_n, the Cd²⁺ atom is seven-coordinated by two water O atoms, by three O atoms from two 2-hy­droxy-5-sulfonato­benzoate (Hssal²⁻) ligands and by two N atoms from a 4,5-di­aza­fluoren-9-one (Dafo) ligand in a distorted penta­gonal–bipyramidal geometry. The Cd²⁺ atoms are monodentately coordinated by the sulfonate group of one Hssal²⁻ ligand and bidentately coordinated by the carboxyl­ate group of another Hssal²⁻ ligand, generating zigzag chains running parallel to [010]. The chains are linked by O—H...O hydrogen bonds into a three-dimensional architecture.

Crystal structure of poly[μ₆-adipato-di­aquadi-μ₂-oxalato-didysprosium(III)]

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.