Emf(H) data analysis of weak metallic complexes using reduced formation functions

被引：59
作者：
Brito, F [1 ]
Araujo, ML
Lubes, V
D'Ascoli, A
Mederos, A
Gili, P
Domínguez, S
Chinea, E
Hernández-Molina, R
Armas, MT
Baran, EJ
机构：
[1] Cent Univ Venezuela, Fac Ciencias, Ctr Equilibrios Soluc, Caracas 1040, Venezuela
[2] Univ La Laguna, Dept Quim Inorgan, Tenerife 38204, Spain
[3] Natl Univ La Plata, Fac Ciencias Exactas, Ctr Quim Inorgan, RA-1900 La Plata, Argentina
来源：
JOURNAL OF COORDINATION CHEMISTRY | 2005年 / 58卷 / 06期
关键词：
Emf(H) data analysis; weak metallic complexes; reduced formation functions; stability constants; FONDO version; LETAGROP program;
D O I：
10.1080/00958970500037433
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A general method for the study of weak metal complexes by emf(H) measurements has been developed using reduced formation functions instead of classical formation functions. This approach consists Of Subtracting the contribution of the products of the hydrolysis (protolysis) of the metallic cation (anion), as well as the possible protonated species of the ligand from the total number of associated H+, and from the total concentrations of metal or ligand, observing only the contribution of the reaction of interest. This was carried out using the FONDO version of the generalized least-squares computer program LETAGROP, written to analyze these reduced formation functions. The aim of this communication was to show in greater detail than in previous publications the data analysis of reactions in solution using these reduced formation functions. The method is illustrated using emf(H) data for the three-component systems H+-Be(II)-scrine, H+-Mo(VI)-NTA and H+-V(IV)-V(V) investigated recently.
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收藏
页码：501 / 512
页数：12
相关论文
共 72 条
[41]   EQUILIBRIA IN AQUEOUS-SOLUTION BETWEEN BE(II) AND NITRILOTRIACETIC, METHYL-C-NITRILOTRIACETIC, NITRILODIACETICPROPIONIC, NITRILOACETICDIPROPIONIC AND NITRILOTRIPROPIONIC ACIDS [J].
MEDEROS, A ;
DOMINGUEZ, S ;
MEDINA, AM ;
BRITO, F ;
CHINEA, E ;
BAZDIKIAN, K .
POLYHEDRON, 1987, 6 (06) :1365-1373
[42]   EQUILIBRIA IN AQUEOUS-SOLUTION BETWEEN BE(II) AND IMINODIACETIC, N-METHYLIMINODIACETIC, N-ETHYLIMINODIACETIC AND N-PROPYLIMINODIACETIC ACIDS [J].
MEDEROS, A ;
DOMINGUEZ, S ;
MORALES, MJ ;
BRITO, F ;
CHINEA, E .
POLYHEDRON, 1987, 6 (02) :303-308
[43]   EQUILIBRIA IN AQUEOUS-SOLUTION BETWEEN BERYLLIUM(II) AND D,L-ASPARTIC ACID AND D,L-METHIONINE [J].
MEDEROS, A ;
MEDINA, E ;
COLOMER, JJA ;
BRITO, F .
POLYHEDRON, 1989, 8 (16) :2017-2022
[44]   EQUILIBRIA IN AQUEOUS-SOLUTION BETWEEN BERYLLIUM(II) AND ORTHO-PHENYLENEDIAMINE-N,N,N',N'-TETRAACETIC, 3,4-TOLUENEDIAMINE-N,N,N',N'-TETRAACETIC AND 4-CHLORO-1,2-PHENYLENEDIAMINE-N,N,N',N'-TETRAACETIC ACIDS [J].
MEDEROS, A ;
FELIPE, JM ;
HERNANDEZPADILLA, M ;
BRITO, F ;
CHINEA, E ;
BAZDIKIAN, K .
JOURNAL OF COORDINATION CHEMISTRY, 1986, 14 (04) :277-284
[45]  
MEDEROS A, 1984, B SOC QUIM PERU, V50, P277
[46]  
MEDEROS A, 2000, METAL IONS BIOL MED, V6, P607
[47]  
Mederos A., 1996, QUIMICA ANALITICA S1, V15, pS21
[48]  
Meloun M., 1988, COMPUTATION SOLUTION
[49]   KINETIC-STUDIES OF THE ANATION AND RELATED REACTIONS OF AQUA(NITRILOTRIACETATO)OXOVANADATE(IV) IN AQUEOUS-SOLUTION [J].
NISHIZAWA, M ;
SAITO, K .
INORGANIC CHEMISTRY, 1980, 19 (08) :2284-2288
[50]  
Pattersson L., 1983, CHEM SCRIPTA, V22, P1254
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