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http://dx.doi.org/10.5012/bkcs.2011.32.9.3255

Crystal Structures and Thermal Properties of Two Binuclear Cd(II) Supramolecular Complexes Based on Quinolinecarboxylate Ligand  

Hao, Hu-Jun (College of Chemistry and Ecological Engineering, Guangxi University for Nationalities)
Yin, Xian-Hong (College of Chemistry and Ecological Engineering, Guangxi University for Nationalities)
Lin, Cui-Wu (College of Chemistry and Chemical Engineering, Guangxi University)
Wei, Shui-Qiang (College of Chemistry and Chemical Engineering, Guangxi University)
Publication Information
Bulletin of the Korean Chemical Society / v.32, no.9, 2011 , pp. 3255-3260 More about this Journal
Abstract
Two novel binuclear metal-organic coordination complexes $[Cd_2(L)_2(bpy)_2(H_2O)_2]{\cdot}6H_2O$ (1), $[Cd_2(L)_2(phen)_2-(H_2O)_2]{\cdot}2H_2O$ (2) (where L = 2-methylquinoline-3,4-dicarboxylate dianion, bpy = 2,2'-bipyridine, phen = 1,10-phenanthroline) have been synthesized under hydrothermal conditions and characterized by single crystal Xray diffraction, spectral method (IR), elemental analysis and thermal gravimetric analysis (TGA). Both 1 and 2 consist of two Cd(II) atoms bridged by two monoatomic bridging carboxylate groups from two L ligands, and the second carboxylate group of each L is monodentately coordinated to Cd(II), creating a sevenmembered chelating ring. The coordination at each metal nucleus is completed by a water molecule and a chelating bidentate molecule. The 3D structures of the complexes are stabilized by ${\pi}-{\pi}$ stacking interactions and hydrogen-bonds.
Keywords
Crystal structure; Cadmium (II); ${\pi}-{\pi}$ stacking; Hydrogen bonding;
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