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 - 1975/9
Y1 - 1975/9
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 - http://www.scopus.com/inward/record.url?scp=0038914330&partnerID=8YFLogxK
U2 - 10.1016/0020-7055(75)90004-2
DO - 10.1016/0020-7055(75)90004-2
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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 -