Key indicators: single-crystal X-ray study; T = 296 K; mean (C-C) = 0.003 Å; R factor = 0.019; wR factor = 0.041; data-to-parameter ratio = 15.1.In the title complex, [Nd(C 10 H 13 N 2 O 8 )(H 2 O)] n , each Nd III ion is coordinated by six O atoms and two N atoms from one N 0 -(carboxymethyl)ethylenediamine-N,N,N 0 -triacetate (edta) ligand and one water molecule, displaying a bicapped trigonal-prismatic geometry. The edta ligands link the neodymium metal centres, forming polymeric chains running along the a axis of the unit cell. These chains are further assembled via intermolecular O-HÁ Á ÁO hydrogen-bonding interactions into a three-dimensional supramolecular network.
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In the title compound, [Fe(C8H5Cl2O3)2(H2O)2]n, the FeII atom is located on an inversion center. It is coordinated by four O atoms from four 2,4-dichlorophenoxyacetate ligands and two water molecules, displaying a distorted octahedral geometry. The carboxylate groups of the 2,4-dichlorophenoxyacetate ligands link the Fe atoms, forming a polymeric layered network in the bc plane. Intralayer O—H⋯O hydrogen bonds enhance the stability of the two-dimensional network.
In the title complex, {[Tb(C6H5NO2)3(H2O)2](ClO4)3·H2O}n, the TbIII ion is coordinated by six O atoms from six isonicotinate (inic) ligands and two water molecules, displaying a bicapped trigonal-prismatic geometry. The inic ligands, which are protonated at the pyridine N atom, link the metal centres, forming a polymeric chain running parallel to the a axis. The chains are further assembled via intra- and intermolecular O—H⋯O and N—H⋯O hydrogen-bonding interactions into a three-dimensional supramolecular network involving the inic ligands, the water molecules and the perchlorate anions. One of the perchlorate ions is disordered over two sites with occupancies of 0.561 (17) and 0.439 (17).
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