کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5410981 | 1506563 | 2015 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Stability constants of the ternary complexes formed between vanadium(III)-salicylic acid and amino acids
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this work, the ternary complex formation between vanadium(III), salicylic acid (H2Sal) as primary ligand and the amino acids glycine, α-alanine, β-alanine, proline, serine, threonine, methionine and phenylalanine (HL) as secondary ligands, in aqueous solution at 25 °C using 3.0 mol·dmâ 3 KCl as the ionic medium was studied. The analysis of the potentiometric data using the least squares computational program LETAGROP indicates the formation of the species [V(Sal)(HL)]+, V(Sal)(L), [V(Sal)(L)(OH)]â, [V(Sal)(L)(OH)2]2 â, [V(Sal)2(L)]2 â and [V(Sal)2(L)(OH)]3 â in the ternary V(III)-H2Sal-amino acid (HL) systems studied. The values of â log Kâ³ for ternary systems involving amino acids have been evaluated and discussed. The species distribution diagrams as a function of pH were briefly discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 207, July 2015, Pages 323-326
Journal: Journal of Molecular Liquids - Volume 207, July 2015, Pages 323-326
نویسندگان
Geraldine Cabeza, Bernardo Contreras, Mary Lorena Araujo, Felipe Brito, Lino Hernandez, Alejandro Pérez, Edgar Del Carpio, Vito Lubes,