ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

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)