Two　europium(III)　coordination　polymers　(CPs),　namely,　poly[[diaquabis(mu(4)-1H-benzimidazole-5,6-dicarboxylato-kappa　N-6(3):O-5,O-5　＇:O-5,O-6:O-6　＇)(mu(2)-oxalato-kappa　O-4(1),O-2:O-1　＇,O-2　＇)dieuropium(III)]　dihydrate],　{[Eu-2(C9H4N2O4)(2)(C2O4)(H2O)(2)]center　dot　2H(2)O}(n)　(1),　and　poly[(mu(3)-1H-benzimidazol-3-ium-5,6-dicarboxylato-kappa　O-5(5):O-5＇,O-6:O-6,O-6＇)(mu(3)-sulfato-kappa　O-3:O　＇:O　＇＇)europium(III)],　[Eu(C9H5N2O4)(SO4)](n)　(2),　have　been　synthesized　via　the　hydrothermal　method　and　structurally　characterized.　CP　1　shows　a　three-dimensional　network,　in　which　the　oxalate　ligand　acts　as　a　pillar,　while　CP　2　has　a　two-dimensional　network　based　on　a　europium(III)-sulfate　skeleton,　further　extended　into　a　three-dimensional　framework　by　hydrogen-bonding　interactions.　The　structural　diversity　in　the　two　compounds　can　be　attributed　to　the　different　acidification　abilities　and　geometries　of　the　anionic　ligands.　The　luminescence　properties　of　1　display　the　characteristic　europium　red　emission　with　CIE　chromaticity　coordinates　(2/3,　0.34).　Interestingly,　CP　2　shows　the　characteristic　red　emission　with　CIE　chromaticity　coordinates　(0.60,　0.34)　when　excited　at　280　nm　and　a　near-white　emission　with　CIE　chromaticity　coordinates　(0.38,　0.29)　when　excited　at　340　nm.