Synthesis,crystal structures,and characterization of copper(II) carboxylate complexes incorporating 1,10-phenanthroline and bipyridine |
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Abstract: | A series of Cu(II) carboxylate complexes (carboxylate?=?2-fluorobenzoic acid (2-HFBA) or 4-fluorobenzoic acid (4-HFBA)) containing either one chelating 1,10-phenanthroline (phen) or 2,2′-bipyridine (bipy) have been synthesized and characterized by single-crystal X-ray diffraction, IR spectroscopy, and thermal analyses. In Cu(bipy)(H2O)(2-FBA)2] (1), Cu(bipy)(H2O)(4-FBA)2] (3), and Cu(phen)(H2O)(2-FBA)2] (4), Cu is five-coordinate in a square pyramidal geometry and four-coordinate in Cu(phen)(2-FBA)2] (2). The four complexes are extended into 1-D chains through hydrogen-bonding and π?···?π interactions in 1 and 4, only hydrogen-bonding in 2, and π?···?π interactions in 3. These contacts lead to aggregation and supramolecular self-assembly. |
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Keywords: | 2-Fluorobenzoic acid 4-Fluorobenzoic acid Synthesis Hydrogen-bonding π?···?π Interactions |
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