Oxidation of a nickel(II) complex with an unsaturated macrocyclic ligand in aqueous solutions. A pulse radiolytic study

Journal Article · Thu Feb 01 00:00:00 EST 1979 · Inorg. Chem.; (United States)

DOI:https://doi.org/10.1021/ic50192a048· OSTI ID:6478348

Jaacobi, M; Meyerstein, D; Lilie, J

The kinetics of oxidation of Ni/sup II/L by Br/sub 2//sup -/ and OH radicals in aqueous solutions were studied. The kinetics of the aquation reaction Ni/sup III/LBr/sup 2 +/ ..-->.. Ni/sup III/L + Br/sup -/ was found to be base catalyzed. The pK of the reaction Ni/sup III/L/sup 3 +/ in equilibrium Ni/sup III/L(OH)/sup 2 +/ was determined, pK = 3.45, and the redox potential of the couple Ni/sup III/L/sup 3 +//Ni/sup II/L/sup 2 +/ is 1.34 V. The mechanism of decomposition of Ni/sup III/L is discussed. The spectra of the different intermediates are reported.

• Research Organization: Univ. of the Negev, Beer-Sheva, Israel
• OSTI ID: 6478348
• Journal Information: Inorg. Chem.; (United States), Vol. 18:2
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
NICKEL COMPLEXES
RADIOLYSIS
SODIUM BROMIDES
ABSORPTION SPECTRA
AQUEOUS SOLUTIONS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DECOMPOSITION
IONS
NITROUS OXIDE
OXIDATION
PH VALUE
PULSED IRRADIATION
REACTION INTERMEDIATES
REDOX POTENTIAL
TIME DEPENDENCE
ALKALI METAL COMPOUNDS
BROMIDES
BROMINE COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL RADIATION EFFECTS
CHEMISTRY
COMPLEXES
DISPERSIONS
HALIDES
HALOGEN COMPOUNDS
IRRADIATION
KINETICS
MIXTURES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
REACTION KINETICS
SODIUM COMPOUNDS
SOLUTIONS
SPECTRA
TRANSITION ELEMENT COMPLEXES
400600* - Radiation Chemistry