Speciation of the binary and ternary oxovanadium (IV) complexes with vitamin-B6 and some potentially bidentate amino acids

被引:0
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作者
Pernia, Maria Rebeca [1 ]
Araujo, Mary Lorena [2 ]
Del Carpio, Edgar [3 ]
Hernandez, Lino [1 ]
Lubes, Vito [1 ]
机构
[1] Univ Simon Bolivar USB, Dept Quim, Apartado 89000, Apartado 1080A, Venezuela
[2] Univ Cent Venezuela UCV, Escuela Quim, Fac Ciencias, Ctr Equilibrios Soluc, Caracas, Venezuela
[3] Univ Cent Venezuela UCV, Fac Farm, Escuela Dr Jesus Maria Bianco, Unidad Quim Med, Caracas, Venezuela
关键词
Oxovanadium (IV) complexes; stability constants; vitamin-B-6; amino acids; speciation; PICOLINIC-ACID; CHEMISTRY; VANADIUM; EQUILIBRIA;
D O I
10.1080/00958972.2025.2469773
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The VO2+-Vitamin-B-6 (HVB6) complexes with the amino acids: glycine (Hgly), alpha-alanine (H alpha ala), beta-alanine (H beta ala), proline (Hpro), serine (Hser), threonine (Hthr), methionine (Hmet), phenylalanine (Hphe), leucine (Hleu), isoleucine (Hile), valine (Hval) and tryptophan (Htrp) were studied and the binary and tertiary stability constants determined. The potentiometric measurements were gathered using 1.0 mol.dm(-3) NaCl at 25 degrees C as ionic medium. Experimental data were analyzed using the computational program, LETAGROP, and HYSS was used to obtain the respective distribution diagrams. [GRAPHICS] .
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页数:13
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