Speciation of the mixed-ligand oxovanadium(IV) complexes with 2,2'-Bipyridine and 1,10'-Phenthroline and some bidentate amino acids by potentiometric tritrations

被引：0
|
作者：
Marquez, Francisco [1 ]
Araujo, Mary Lorena [2 ]
Del Carpio, Edgar [3 ]
Hernandez, Lino [1 ]
Lubes, Vito [1 ]
机构：
[1] Univ Simon Bolivar USB, Dept Quim, Caracas 1080 A, Apartado 89000, Venezuela
[2] Univ Cent Venezuela UCV, Escuela Quim, Fac Ciencias, Ctr Equilibrios Soluc, Caracas, Venezuela
[3] Univ Cent Venezuela UCV, Escuela Dr Jesus Maria Bianco, Fac Farm, Unidad Quim Med, Escuela Dr, Caracas, Venezuela
来源：
PHYSICS AND CHEMISTRY OF LIQUIDS | 2025年
关键词：
Oxovanadium(IV) complexes; stability constants; 1,10'-Phenanthroline; 2,2'-Bipyridine; amino acids; ternary complexes; BIS(4,7-DIMETHYL-1,10-PHENANTHROLINE) SULFATOOXOVANADIUM(IV); VANADIUM; CHEMISTRY; METVAN;
D O I：
10.1080/00319104.2025.2478552
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The speciation of the ternary VO2+- 1,10'-Phenanthroline (Phen, L) and VO2+- 2,2'-Bipyridine (Bipy, L) complexes with the amino acids: Glycine (Gly, HB), alpha-Alanine (alpha-Ala, HB), beta-Alanine (beta-Ala, HB), Serine (Ser, HB), Threonine (Thr, HB), Leucine (Leu, HB), Isoleucine (Ile, HB), Valine (Val, HB), Tryptophan (Thr, HB), Glutamine (Gln, HB), Methionine (Met, HB) and Phenylalanine (Phe, HB) were obtained via potentiometric titrations done at 25 degrees C using 1.0 mol.dm-3 NaCl as the ionic medium. The analysis of the experimental data were done with the program LETAGROP, and the HYSS program was used to obtain the distribution diagrams. Related stability parameters including Delta log10 K, log10 X and % R.S were determined only for the Bipy. In the case of the Phen these parameters could not be obtained because the complex [VO(L)(B)]+ was not detected with this ligand.
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页数：10
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