FLUORIDE COMPLEXES OF ZINC(II) AND CADMIUM(II)

被引:3
作者
HEFTER, GT [1 ]
TIOH, NH [1 ]
CHAN, CB [1 ]
机构
[1] UNIV MALAYA,DEPT CHEM,KUALA LUMPUR 59100,MALAYSIA
关键词
D O I
10.1016/S0277-5387(00)84289-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The stability constants, β1[MF+(aq)], for the formation of the monofluoride complexes of zinc(II) and cadmium(II) in aqueous solution have been determined at 25°C and ionic strengths ranging from 0.01 to 3 M (NaClO4) by fluoride ion-selective electrode potentiometry. Despite the difference in size of the zinc(II) and cadmium(II) ions their β1 values are almost identical. Lack of variation of β1 at high ionic strengths has been attributed to weak complexing of the metal ions by perchlorate. Measurements with amalgam electrodes at I = 1 M (NaClO4) have indicated the existence of a very weak second complex MF20(aq) for both zinc(II) and cadmium(II). © 1990.
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页码:901 / 906
页数:6
相关论文
共 38 条
[1]   THE RELATIVE AFFINITIES OF LIGAND ATOMS FOR ACCEPTOR MOLECULES AND IONS [J].
AHRLAND, S ;
CHATT, J ;
DAVIES, NR .
QUARTERLY REVIEWS, 1958, 12 (03) :265-276
[2]  
AHRLAND S, 1978, CHEM NONAQUEOUS SO A, V5
[3]  
[Anonymous], 1964, SPECIAL PUBLICATION
[4]  
[Anonymous], UNPUB
[5]  
[Anonymous], 2002, MODERN ELECTROCHEMIS, DOI DOI 10.1007/B114168
[7]   REVERSIBILITY OF ZN(2) -] ZN ELECTRODE REACTION IN APPLICATION OF POLAROGRAPHIC THEORY TO STUDY OF FLUORIDE COMPLEXES OF ZINC [J].
BOND, AM .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1969, 20 (01) :109-&
[8]   INEQUIVALENCE OF APPARENT POLAROGRAPHIC AND POTENTIOMETRIC STABILITY-CONSTANTS FOR CADMIUM(II) BROMIDE AND IODIDE SYSTEMS [J].
BOND, AM ;
HEFTER, G .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1976, 68 (02) :203-216
[9]  
BOND AM, 1973, J ELECTROANAL CHEM, V42, P1
[10]   A STUDY OF FLUORIDE COMPLEXES OF CADMIUM BY AC AND DC POLAROGRAPHY [J].
BOND, AM .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1969, 20 (02) :223-&