Hydrothermal synthesis, crystal structures, and properties of two Co(II) complexes based on 4-bromoisophthalic acid and N-donor ligands |
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Authors: | M. L. Han K. Y. Zhao |
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Affiliation: | 1. College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471000, P.R. China
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Abstract: | Two new Co(II) complexes, [Co2(H2O)(Bipy)2(Bript)2] n (I) and [Co(H2O)(Phen)(Bript)] · H2O (II), where H2Bript = 4-bromoisophthalic acid, Bipy = 2,2??-bipyridine, and Phen = 1,10-phenanthroline, have been synthesized and characterized by elemental analysis, IR, and single-crystal X-ray diffraction. Complex I has binuclear units in which two Co2+ ions are bridged by two carboxylate groups and a coordinaiod-water molecule, and the binuclear units are connected by Bript to generate a 1D helical chain. These 1D helical chains are further linked by ????? stacking interactions to form a 3D supramolecular network, while complex II has a 2D layer motif. In I and II, there exists extensive hydrogen bonding interactions. The thermal behavior of the two corresponding complexes have briefly been investigated. |
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