A　series　of　capsule-like　anion　receptors　(1:　{[(bpy)2Pd2]2L12}4+,　2:　{[(bpy)2Pd2]2L22}4+,　3:　{[(bpy)2Pd2]3L32}6+　and　4:　{[(bpy)2Pd2]3L42}6+)　have　been　successfully　self-assembled　by　coordinating　the　flexible　amide　based　polypyrazole　ligands　(H2L1:　N1,N4-di(1H-pyrazol-5-yl)terephthalamide,　H2L2:　N1,N4-bis(3-methyl-1H-pyrazol-5yl)-　terephthalamide,　H3L3:　N1,N3,N5-tri(1H-pyrazol-5-yl)benzene-1,3,5-tricarboxamide　and　H3L4:　N1,N3,N5-tris　(3-methyl-1H-pyrazol-5-yl)benzene-1,3,5-tricarboxamide)　with　dipalladium　corners　([(bpy)2Pd2(NO3)2](NO3)2,　where　bpy　=　2,2　＇-bipyridine)　in　aqueous　solution.　These　complexes　were　characterized　by　1H　NMR,　19F　NMR,　31P　NMR,　2D　1H-1H　NOSEY　spectra,　ESI-MS　and　single　crystal　X-ray　diffraction.　Interestingly,　the　NMR　spectra　measured　in　solution　and　structure　analysis　carried　out　in　the　solid　state　consistently　confirmed　that　one　nitrate　anion　was　unsymmetrically　accommodated　in　the　cavity　of　capsules　1　and　2　via　N-Hanion　hydrogen　bonding　and　other　multiple　weak　interactions.　Furthermore,　1H　NMR　titrations　for　competitive　anion　exchange　indicated　that　complexes　14NO3xa1;　and　24NO3xa1;　show　high　selectivity　for　the　encapsulation　of　NO3-　in　dimethyl　sulfoxide.