Poly[[diaqua­(1,10-phenanthroline-κ²N,N′)(μ₃-4-sulfonato­benzene-1,2-di­car­boxyl­ato-κ⁴O¹:O²,O^2′:O⁴)erbium(III)] dihydrate]

The 4-sulfophthalate trianion in the polymeric complex, {[Er(C₈H₃O₇S)(C₁₂H₈N₂)(H₂O)₂]·2H₂O}_n, bridges three water/phenanthroline-coordinated Er^III ions to form a three-dimensional network architecture. The metal atom is further chelated by a carboxyl­ate group and is covalently bonded to a monodentate carboxyl­ate group as well as to a monodentate sulfonate group in a distorted square anti­prismatic geometry. The coordinating water molecules and the lattice water molecules, one of which is disordered over two positions [major component 65 (3)%], are hydrogen bonded to the network.

Poly[[diaqua­(1,10-phenanthroline-κ²N,N′)(μ₃-4-sulfonato­benzene-1,2-dicarboxyl­ato-κ⁴O¹:O²,O^2′:O⁴)dysprosium(III)] dihydrate]

The 4-sulfophthalate trianion in the polymeric title complex, {[Dy(C₈H₃O₇S)(C₁₂H₈N₂)(H₂O)₂]·2H₂O}_n, bridges three water/phenanthroline-coordinated Dy^III atoms to form a three-dimensional network architecture. The metal atom is further chelated by a carboxyl­ate group and is covalently bonded to a monodentate carboxyl­ate group and to a monodentate sulfonate group in a distorted square-anti­prismatic geometry. The coordinating and the solvent water mol­ecules are hydrogen bonded to the network. In the crystal, one solvent water mol­ecule is disordered over two positions [major component = 59 (3)%].