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      Estudios de la Formación de los Complejos de Cobre (II) con los Ácidos Picolínico y Dipicolínico en KNO3 1,0 mol.dm-3 a 25 °C Translated title: Formation Study of the Copper(II) Complexes with Picolinic and Dipicolinic Acids in 1.0 mol.dm-3 KNO3 at 25 °C

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          Abstract

          En este trabajo de investigación se llevo a cabo el estudio de la formación de complejos binarios de Cu(II) con los ácidos picolínico y dipicolínico en disolución acuosa (KNO3 1,0 M, 25 ºC) en medio iónico de KNO3 1,0 M a 25 ºC. Los sistemas se estudiaron mediante mediciones de fuerza electromotrices fem(H). Los resultados experimentales fueron analizados mediante el programa de mínimos cuadrados LETAGROP, donde se obtuvo que los complejos binarios que se formaron con ácido picolínico son los complejos [Cupic]+, dos hidroxoespecies Cu(OH)pic y [Cu(OH)2pic]- y los complejos Cupic2 y [Cupic3]- y con el ácido dipicolínico se obtuvieron los complejos [CuHdipic]+, Cudipic, [Cudipic2]2- y las hidroxoespecies [Cu(OH)dipic]- y [Cu(OH)2dipic]2-.

          Translated abstract

          This research was conducted in order to study the formation of binary complexes of Cu(II) with picolinic(Hpic) and dipicolinic(H2dipic) acids in aqueous solution in the ionic medium 1.0 M KNO3 at 25 °C. The systems were studied by electromotive force (emf (H)) measurements. The experimental results were analyzed by the least squares program LETAGROP, where the binary complexes [Cupic]+ and two hydroxospecies Cu(OH)pic and [Cu(OH)2pic]- and Cupic2 and [Cupic3]- were found with the picolinic acid and with the dipicolinic acid the complex [CuHdipic]+, Cudipic, [Cudipic2]2- and two hydroxoespecies [Cu(OH) dipic]- and [Cu(OH)2dipic]2- were observed.

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          Most cited references15

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          Insulin-like stimulation of glucose oxidation in rat adipocytes by vanadyl (IV) ions.

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            “Antidiabetic copper(II)-picolinate: Impact of the first transition metal in the metallopicolinate complexes”

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              “The hydrolysis of metal ions: IV. Liquid-junction potentials and constancy of activity factors in NaClO4-HClO4 ionic medium”

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                Author and article information

                Journal
                rtfiuz
                Revista Técnica de la Facultad de Ingeniería Universidad del Zulia
                Rev. Téc. Ing. Univ. Zulia
                Facultad de Ingeniería, Universidad del Zulia (Maracaibo, Zulia, Venezuela )
                0254-0770
                December 2017
                : 40
                : 3
                : 179-184
                Affiliations
                [01] Caracas orgnameUniversidad Simón Bolívar (USB) orgdiv1Departamento de Química Venezuela
                Article
                S0254-07702017000300007 S0254-0770(17)04000300007
                8d60e34f-d60d-45fa-9c97-89aee06c07f4

                http://creativecommons.org/licenses/by/4.0/

                History
                : 25 September 2017
                : 18 July 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 15, Pages: 6
                Product

                SciELO Venezuela

                Categories
                Trabajos Originales

                constantes de estabilidad,estudios potenciométricos,equilibrios en solución,Cobre(II),stability constants,potentiometric studies,solution equilibria,Copper(II)

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