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KMID : 1059519870310060503
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Journal of the Korean Chemical Society
1987 Volume.31 No. 6 p.503 ~ p.508
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Studies on the Complexation of a Nitrogen-Oxygen Donor Macrocyclic Ligand with Transition Metal Ions in Dioxane-Water Mixed Solvent
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Cho Moon-Hwan
Lee Sang-Cheol
Kim Si-Joong
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Abstract
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The protonation constants of 3,4 : 9,10-dibenzo-1,12-diaza-5,8-dioxacyclotetradecane (NenOenH4) and stability constants of its transition metal complexes have been determined by the potentiometric titration in 1 : 1 dioxane-water mixture with 0.1 ionic strength at 25℃. For a given anion system, the stabilitv constants of the complexes are in the order of Mn2+ < Co2+ < Ni2+ < Cu2+ > Zn2+, which accords with the Williams-Irving series.
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