Ternary nickel (II) complexes with 8-hydroxyquinoline and some amino acids

In this work, we report the results of a speciation study on the ternary complexes present in the systems formed by Ni(II) ion, 8-hydroxyquinoline (8-HQ) and the amino acids = α-alanine (HαAla), β-alanine (HβAla), phenylalanine (HPhe), proline (HPro), glycine (HGly), serine (HSer), threonine (HThr),...

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Bibliographic Details
Published in:Physics and chemistry of liquids 2021-07, Vol.59 (4), p.597-606
Main Authors: Linares, Yoselin, Perez, Orlimar, Urdaneta, Andres, Henríquez, Yurgenis, Del Carpio, Edgar, Lubes, Giuseppe, Madden, Waleska, Araujo, Mary Lorena, Lubes, Vito, Hernández, Lino
Format: Article
Language:English
Subjects:
8-hydroxyquinoline
Alanine
Amino acids
Aspartic acid
Glutamic acid
Glycine
Histidine
Hydroxyquinoline
Methionine
Nickel
Nickel (II) complexes
Phenylalanine
potentiometric studies
Proline
Sodium chloride
Speciation
ternary complexes
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Summary:In this work, we report the results of a speciation study on the ternary complexes present in the systems formed by Ni(II) ion, 8-hydroxyquinoline (8-HQ) and the amino acids = α-alanine (HαAla), β-alanine (HβAla), phenylalanine (HPhe), proline (HPro), glycine (HGly), serine (HSer), threonine (HThr), aspartic acid (H 2 Asp), glutamic acid (H 2 Glu), methionine (HMet), histidine (H 2 His) and cysteine (H 2 Cys). The analysis involved the use of the potentiometric data with a least-squares program (LETAGROP) in aqueous 1 M NaCl solution at 25°C. The binary complexes formed in the system Ni(II) - 8-HQ in aqueous 1 M NaCl solution at 25°C were also determined and are presented here.
ISSN:0031-9104
1029-0451
DOI:10.1080/00319104.2020.1793334