Three-dimensional　porous　framework{[Ni-3(BPTCA)(2)(H2O)(2)]-[Ni(H2O)(6)]center　dot　10H(2)O}(n)　(1)　was　synthesized　by　using　the　4,4＇-bipyridine-2,2＇6,6＇-tetracarboxylic　acid　anion　(BPTCA(-4))　as　building　block　under　hydrothermal　conditions.　The　structural　analysis　revealed　this　complex　has　a　NbO　topology.　Unexpectedly,　1　has　an　anionic　framework　with　10.9　x　8.7　angstrom　rectangle　channels,　and　the　cationic　[Ni(H2O)(6)](2+)　species　serve　as　guest.　In　addition,　thermogravimetric　analyses　proved　1　can　keep　its　crystalline　nature　even　at　300　degrees　C.　The　nitrogen　adsorption　and　magnetic　properties　of　1　were　also　investigated.