Hydrothermal synthesis, crystal structures, and properties of Co and Ni supramolecular complexes with 2,4,6-trimethyl benzoate and 4,4′-bipyridyl |
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| Authors: | Murugan Indrani Ramasamy Ramasubramanian Sudalaiandi Kumaresan Sung Kwon Kang Min Chen Miao Du |
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| Affiliation: | aDepartment of Chemistry, Manonmaniam Sundaranar University, Tirunelveli 627 012, Tamil Nadu, India;bDepartment of Chemistry, Chungnam National University, Daejeon 305-764, South Korea;cCollege of Chemistry and Life Science, Tianjin Normal University, Tianjin 300387, PR China |
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| Abstract: | Two new coordination complexes, viz. [Co(tmb)2(4,4′-bpy)2(H2O)2](Htmb)2 (1) and {[Ni(tmb)2(μ-4,4′-bpy)2(H2O)2](4,4′-bpy)}n (2), have been hydrothermally synthesized by reaction of the corresponding metal acetate with 2,4,6-trimethylbenzoic acid (Htmb) and 4,4′-bipyridyl (4,4′-bpy). X-ray single-crystal diffraction suggests that complex 1 represents a discrete mononuclear species in which the central metal ion is coordinated by the terminal carboxylate moiety and the 4,4′-bipyridyl ligand. The crystal structure of complex 2 reveals a 1D chain coordination polymer in which the Ni(II) ions are connected by the bridging 4,4′-bipyridyl ligands. In both cases, the coordination arrays are further extended via hydrogen bonding interactions to generate 3D supramolecular networks. Complexes 1 and 2 have also been characterized by spectroscopic (IR and UV/Vis), thermal (TGA) and magnetic susceptibility measurements. In addition, both complexes exhibit antimicrobial activity. |
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| Keywords: | CoII and NiII complexes 2,4,6-Trimethylbenzoate 4,4′ -Bipyridyl Hydrogen bonding, structures and properties |
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