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KMID : 1059519900340020165
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Journal of the Korean Chemical Society
1990 Volume.34 No. 2 p.165 ~ p.170
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The Influence for the Change of Chelate Ring of Co (Ⅲ) Complexes Containing EDTA by Cd2+, H+, and OH-
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Kim Dong-Yeub
Lee Dong-Jin
Oh Chang-Eon
Doh Myung-Ki
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Abstract
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The reactivity and structural change of optical active [Co(edta)]- and [Co(Hedta)Cl]- complexes has been investigated in the presence of several catalyst (H+, OH-, and Cd2+). When Δ-[Co(edta)]- complex was reacted with H+ or OH- as the catalyst, G-ring opening of ligand in the complex was accompanied, and then, optically active, [Co(Hedta)OH2], and racemic mixture, [Co(edta)OH]2- were produced. When (-)546-[Co(Hedta)Cl]- complex was reacted with Cd2+ as the catalyst, the Ring-close was accompanied, and Δ-[Co(edta)]- complex was produced, which the absolute configuration was retained.
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