Nickel(II) and Cobalt(II) Complexes with Symmetrical Four-Dentate Ligands: Crystal Structures,Characterization, and Initial DNA Binding Mechanism Research |
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| Authors: | Rong-Lan Zhang Jian-She Zhao Pin Yang Qi-Zhen Shi |
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| Affiliation: | (1) Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry, Northwest University, 710069 Xi’an, Shaanxi, China;(2) Institute of Molecular Science, Chemical Biology and Molecular Engineering Laboratory of Education Ministry, Shanxi University, 030006 Taiyuan, China; |
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| Abstract: | Abstract Four new nickel(II) and cobalt(II) complexes of Schiff base ligands: [Ni(L)Cl2]·2H2O (I), [Ni(L)(H2O)2] (NO3)2 (II), [Ni(L)(H2O)2] (ClO4)2 (III), and [Co(L) (H2O)2] (NO3)2 (IV) (L = 1,3-[bis(pyridine-2-imino)]propane) have been synthesized. The four complexes have been fully characterized by elemental analysis, IR, absorption spectra, emission spectra, and single-crystal X-ray diffraction analysis. The binding of the four complexes to calf thymus DNA (CT DNA) has been investigated by absorption spectra and emission spectra. The results of the two methods indicate that the action mode of complex I with DNA is intercalative mainly, and the action mode of complexes II, III, IV with DNA cannot be concluded, it should be sustained by other experimental measurements. |
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