1 ), [(CH_(3))_(2)NH_(2)]UO_(2)(BTPCA) (2 ), [(CH_(3))_(2)NH_(2)]_(2)[UO_(2)(BTPCA)][UO_(2)(BTPCA)]·(H_(2)O)_(5.5) (3 ), [(CH_(3))_(2)NH_(2)]_(2)(UO_(2))_(2)(BTPCA)_(2)·(H_(2)O)_(3) (4 ), and [(CH_(3))_(2)NH_(2)]UO_(2)(BTPCA) (5 ), by the utilization of semirigid ligand 1,1′,1″-(benzene-1,3,5-triyl)tripiperidine-4-carboxylic acid (H_(3)BTPCA) and uranyl nitrate through solvothermal reactions. Single-crystal X-ray diffraction analysis reveals that the five compounds share a similar structure composition and local coordination mode to the exc...