In the title compound, [Ho(C7H6NO2)3(H2O)] n , a two-dimensional coordination polymer, the eight-coordinate HoIII ions are bridged by two carboxyl-ate groups from two 4-amino-benzoate ligands, forming a centrosymmetric dinuclear block. These blocks are further connected by 4-amino-benzoate ligands, yielding a two-dimensional network; a three-dimensional supra-molecular structure is then formed via hydrogen bond...
