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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 1, Number 2
February 20, 1980 

Complexes of Polyvalent Metal Ions (Ⅵ). Complexes of Nickel and Cadmium with Dibasic Organic Acids in Aqueous, Ethanol-Water and Acetone-Water Solutions
Sang Up Choi, Joon Kil Kang, Young Il Pae
Solutions of Ni2+ and Cd2+ were mixed with the solutions of various dibasic organic acids in the presence of cation exchange resin at room temperature. The distribution ratios of the metal ions between resin and solution were measured, using radioactive metal ions as tracer. From the observed variation of the distribution ratios with acid anion concentrations, it was concluded that Ni2+ and Cd2+ formed one-to-one complexes with succinate, malonate, o-phthalate and tartarate ions in aqueous, 20 % ethanol-water and 20 % acetone-water solutions. The results of the present study indicated that the relative stabilities of the complexes in solution increased generally in the order : Ni2+ < Cd2+ complexes. Succinate < malonate < o-phthalate < tartarate complexes. Aqueous < mixed solvent systems.
49 - 54
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