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Synthesis and Characterization of β -Diketone Isonicotinoylhydrazone—Rare Earth Complexes and their Elimination Effect on Biological Free Radicals

H. W. Jing, B. H. Chen, Zh. Zh. Zeng, and W. M. Huo

Department of Chemistry, Lanzhou University, Lanzhou, 730 000 China

 

Abstract: Six new complexes, RE(C16H15N3O2)3 and RE(C20H19N3O2Fe)3 (RE = La, Sm, Y) have been synthesized and characterized by elemental analyses, IR and 1H NMR spectra. It is proved that these β-diketones are tridentate ligands to the lanthanide ion. The coordination number of the central RE ion equals nine and we suggest a tricapped trigonal structure for these complexes. The inhibition rates of the complexes and the ligands to biological free radicals (O2-. and OH.) were determined.

Full paper in Portable Document Format: 523a163.pdf

 

Chemical Papers 52 (3) 163–166 (1998)

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