Due to their wide range of coordination modes and versatile conformations when binding to metal atoms, multicarboxylate ligands are of interest in the design of metal–organic frameworks (MOFs). Three CdIIcomplexes, namelycatena-poly[diammonium [[chloridocadmium(II)]-di-μ-chlorido-[chloridocadmium(II)]-bis(μ-3-aminobenzoato)-κ3N:O,O′;κ3O,O′:N]], {(NH4)[CdCl2(C7H6NO2)]}n, (I),catena-poly[[[aquacadmium(II)]-bis(μ-4-aminobenzoato)-κ3N:O,O′;κ3O,O′:N] monohydrate], {[Cd(C7H6NO2)2(H2O)]·H2O}n, (II), and di-μ-acetato-κ4O:O′-bis[(4-aminobenzoato-κ2O,O′)(2,2′-bipyridine-κ2N,N′)cadmium(II)], [Cd2(CH3COO)2(C7H6NO2)2(C10H8N2)2], (III), with different stuctural forms are reported. Complex (I) has a one-dimensional ladder structure, with strong N—H...O and weak N—H...Cl hydrogen bonds linking the cations and anions in the three-dimensional supramolecular structure. Complex (II) has a one-dimensional chain structure. Extensive O—H...O and N—H...O hydrogen bonds between the anionic ligands and the solvent water molecules and π–π stacking interactions between the centroids of the benzene rings lead to the three-dimensional supramolecular structure. Complex (III) is a binuclear molecule which is extended into a three-dimensional supramolecular structureviastrong N—H...O and weak C—H...O hydrogen bonds.