Formation and properties of the trivalent nickel-ethylene diamine tetra-acetic acid (EDTA) complex in aqueous solutions: A pulse-radiolytic study

J. Lati; D. Meyerstein

doi:10.1016/0020-7055(75)90004-2

Formation and properties of the trivalent nickel-ethylene diamine tetra-acetic acid (EDTA) complex in aqueous solutions: A pulse-radiolytic study

J. Lati
, D. Meyerstein

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

Ni(II) EDTA is oxidized by OH radicals to an unstable Ni(III) EDTA complex with a rate of 2·3×10⁹dm³mol^-1s^-1. The trivalent complexformed undergoes a rearrangement reaction to a relatively stable form of Ni(III) EDTA with a rate constant of 2·0×10³s^-1. The spectra of both forms of Ni(III) EDTA have maxima at 288 nm. Ni(III) EDTA reacts with O₂ and I^- with rates k = 6·5×10² dm³ mol^-1 s^-1 and 1·25×10³ dm³ mol^-1 s^-1, respectively, The redox potential of the couple Ni(II) EDTA/Ni(III) EDTA is estimated as 0·54≤E⁰≤1·06 V. The mechanisms of the reactions involved are discussed.

Original language	English
Pages (from-to)	611-616
Number of pages	6
Journal	International Journal for Radiation Physics and Chemistry
Volume	7
Issue number	5
DOIs	https://doi.org/10.1016/0020-7055(75)90004-2
State	Published - 1 Jan 1975

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title = "Formation and properties of the trivalent nickel-ethylene diamine tetra-acetic acid (EDTA) complex in aqueous solutions: A pulse-radiolytic study",

abstract = "Ni(II) EDTA is oxidized by OH radicals to an unstable Ni(III) EDTA complex with a rate of 2·3×109dm3mol-1s-1. The trivalent complexformed undergoes a rearrangement reaction to a relatively stable form of Ni(III) EDTA with a rate constant of 2·0×103s-1. The spectra of both forms of Ni(III) EDTA have maxima at 288 nm. Ni(III) EDTA reacts with O2 and I- with rates k = 6·5×102 dm3 mol-1 s-1 and 1·25×103 dm3 mol-1 s-1, respectively, The redox potential of the couple Ni(II) EDTA/Ni(III) EDTA is estimated as 0·54≤E0≤1·06 V. The mechanisms of the reactions involved are discussed.",

author = "J. Lati and D. Meyerstein",

year = "1975",

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doi = "10.1016/0020-7055(75)90004-2",

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TY - JOUR

T1 - Formation and properties of the trivalent nickel-ethylene diamine tetra-acetic acid (EDTA) complex in aqueous solutions

T2 - A pulse-radiolytic study

AU - Lati, J.

AU - Meyerstein, D.

PY - 1975/1/1

Y1 - 1975/1/1

N2 - Ni(II) EDTA is oxidized by OH radicals to an unstable Ni(III) EDTA complex with a rate of 2·3×109dm3mol-1s-1. The trivalent complexformed undergoes a rearrangement reaction to a relatively stable form of Ni(III) EDTA with a rate constant of 2·0×103s-1. The spectra of both forms of Ni(III) EDTA have maxima at 288 nm. Ni(III) EDTA reacts with O2 and I- with rates k = 6·5×102 dm3 mol-1 s-1 and 1·25×103 dm3 mol-1 s-1, respectively, The redox potential of the couple Ni(II) EDTA/Ni(III) EDTA is estimated as 0·54≤E0≤1·06 V. The mechanisms of the reactions involved are discussed.

AB - Ni(II) EDTA is oxidized by OH radicals to an unstable Ni(III) EDTA complex with a rate of 2·3×109dm3mol-1s-1. The trivalent complexformed undergoes a rearrangement reaction to a relatively stable form of Ni(III) EDTA with a rate constant of 2·0×103s-1. The spectra of both forms of Ni(III) EDTA have maxima at 288 nm. Ni(III) EDTA reacts with O2 and I- with rates k = 6·5×102 dm3 mol-1 s-1 and 1·25×103 dm3 mol-1 s-1, respectively, The redox potential of the couple Ni(II) EDTA/Ni(III) EDTA is estimated as 0·54≤E0≤1·06 V. The mechanisms of the reactions involved are discussed.

UR - https://www.scopus.com/pages/publications/0038914330

U2 - 10.1016/0020-7055(75)90004-2

DO - 10.1016/0020-7055(75)90004-2

M3 - Article

AN - SCOPUS:0038914330

SN - 0020-7055

VL - 7

SP - 611

EP - 616

JO - International Journal for Radiation Physics and Chemistry

JF - International Journal for Radiation Physics and Chemistry

IS - 5

ER -

Formation and properties of the trivalent nickel-ethylene diamine tetra-acetic acid (EDTA) complex in aqueous solutions: A pulse-radiolytic study

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