Presented here is the assembly of two inorganic-organic hybrid compounds by the combination of novel praseodymium-antimony oxochloride clusters and dicarboxylic ligands co-directed by 2-MepyH and Fe(1,10-phen)(3) (or Fe(2,2'-bpy)(3)), which feature a two-fold interpenetrating three-dimensionally anionic network and a one-dimensionally helical anionic chain, respectively.