摘要

A series of Cu-II coordination polymers with different topologies, namely [CuL(L-1)]center dot 2H(2)O (1), [CuL1.5(L-2)]center dot 3H(2)O (2), [CuL(L-3)]center dot 3H(2)O (3) and [Cu2L2.5(L-4)(H2O)]center dot 10H(2)O (4) [L = 1,1 '-(1,4-butanediyl)bis(imidazole), H2L1 fumaric acid, H2L2 = 1,1 '-ferrocenedicarboxylic acid, H2L3 = succinic acid, and H4L4 = pyromellitic acid], are presented. Different polymeric frameworks are obtained by varying the polycarboxylate anions. These include the threefold interpenetrated diamond structure of 1, the rare twofold interpenetrated 4 6 6 network of 2, and two planar four-connected networks of 3 and 4, which display an unusual Archimedean-type (6(5)8) (6(4)8(2)) net containing two different types of nodes and a (56(4)8) (5(2)6(2)8(2))(2)(68(4)10)(5(4)6(2)) net containing four different types of nodes, respectively. Thermogravimetric analysis (TGA) curves of 1, 2, 3, and 4 exhibit three similar weight-loss stages.