| Abstrakt: |
Reactions of N,N′,N′′-tris(3-methylpyridyl)trimesic amide (L) and Cd(OAc)2·2H2O with various polycarboxylic acids afforded {[Cd2(L)(1,4-BDC)2(H2O)2]·2H2O}n (1,4-H2BDC = benzene-1,4-dicarboxylic acid), 1, {[Cd(L)(4,4′-BDC)(H2O)]·H2O}n (4,4′-H2BDC = biphenyl-4,4′-dicarboxylic acid), 2, and {[Cd3(L)2(1,3,5-BTC)2(H2O)6]·15H2O}n (1,3,5-H3BTC = benzene-1,3,5-tricarboxylic acid), 3, which have been structurally determined by using single-crystal X-ray diffraction. Complexes 1–3 display 2D layers with (3·82)2(32·4)2(36·44·52·84·96·105·11), (44·62)-sql and (42·124)3(43)4-3,4L129 topologies, respectively, indicating that the identities of the polycarboxylate ligands involving length and shape play important roles in determining the structural diversity. Complexes 1 and 2 show stabilities in various solvents and display high selectivity toward sensing of Fe3+ ions with low detection limits and good reusability of up to five cycles. [ABSTRACT FROM AUTHOR] |
