Four Novel 3D Copper(II) Coordination Polymers with Different Topologies

A series of Cu II coordination polymers with different topologies, namely [CuL(L 1 )] · 2 H 2 O ( 1 ), [CuL 1.5 (L 2 )] · 3 H 2 O ( 2 ), [CuL(L 3 )] · 3 H 2 O ( 3 ) and [Cu 2 L 2.5 (L 4 )(H 2 O)] · 10 H 2 O ( 4 ) [L = 1,1'‐(1,4‐butanediyl)bis(imidazole), H 2 L 1 = fumaric acid, H 2 L 2 = 1,1'‐ferrocenedicarboxylic acid, H 2 L 3 = succinic acid, and H 4 L 4 = 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 4 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. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)