2015): Syntheses, structures, and photoluminescence of three cadmium(II) coordination complexes based on pyridine-2,6-dicarboxylic acid and a derivative, Journal of Coordination Chemistry,
1D 0DThree Cd(II) coordination complexes (1-3) have been obtained under hydrothermal conditions and characterized. Compounds 1 and 2 exhibit 1-D chain structures and the structures are further connected by hydrogen bonding interactions to form the 3-D packing structures, while compound 3 shows a discrete Cd 4 structure, which is expanded to a 3-D framework through hydrogen bonds with the CsCl-like eight-connected topology. Fluorescence properties indicate that 1 and 2 yield good luminescence and have potential applications in optical materials.Three Cd(II) coordination complexes based on two different pyridine dicarboxylic acids (pyridine-2,6-dicarboxylic acid (H 2 PDA) and its derivative 4-hydroxypyridine-2,6-dicarboxylic acid (chelidamic acid, H 3 CAM)), [Cd 2 (PDA) 2 (H 2 O) 3 ] n (1), {[Cd 2 (HCAM) 2 (H 2 O) 4 ]·3H 2 O} n (2), and [Cd 4 (HCAM) 4 (H 2 O) 8 ] (3) have been isolated under hydrothermal conditions. Compound 1, with H 2 PDA and Cd(NO 3 ) 2 ·4H 2 O, exhibits a 1-D chain structure. Compound 2, obtained by using H 3 CAM instead of H 2 PDA, contains a different 1-D chain from that of 1. When using CdCl 2 ·2.5H 2 O and H 3 CAM, a discrete tetranuclear Cd 4 compound (3) was obtained, and the isolated molecules are expanded to a eight-connected CsCl-like topology with point symbol (4 24 ·6 4 ) through hydrogen bonding interactions. Furthermore, the photoluminescent properties of 1-3 were investigated.