Potentiometric studies on the complexation equilibria between La(III), Pr(III), Nd(III), Gd(III), Sm(III), Tb(III), Dy(III), Ho(III) and 2-acetylpyridinethiosemicarbazone (2-apt)期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Potentiometric studies on the complexation equilibria between La(III), Pr(III), Nd(III), Gd(III), Sm(III), Tb(III), Dy(III), Ho(III) and 2-acetylpyridinethiosemicarbazone (2-apt)

Affiliation:	1. State Key Laboratory of Structural Chemistry; Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian 350002, China;2. School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

Abstract:	Complex formation between trivalent La, Pr, Nd, Gd, Sm, Tb, Dy, Ho and 2-acetylpyridinethiosemicarbazone has been investigated by potentiometric measurements at 25°C and in 0.02 M, 0.05 M, 0.1 M and 0.2 M (NaClO₄) ionic strengths. The stability constants of the complexes formed have been determined and correlated to the size and ionic potentials of the metal ions.

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