Hydroxyl radical reactions with the nickel(II) macrocyclic complexes Ni/sup II/Cr, Ni/sup II/(CR-2H), and Ni/sup II/(CR + 4H). Generation of ligand radicals and nickel(III) species. [Gamma radiation]
Journal Article
·
· Inorg. Chem.; (United States)
Reactions of hydroxyl radicals with the three closely related nickel(II) macrocyclic complexes Ni/sup II/(CR-2H), Ni/sup II/(CR)(H/sub 2/O)/sub 2/, and Ni/sup II/(CR+4H) have been studied by pulse radiolysis. With use of spectral data from the Ni(III) forms of these complexes and the behavior of radiolytically generated intermediates toward O/sub 2/, it has been found that both Ni(III) species and ligand radicals may be produced. The reaction of Ni/sup II/CR(H/sub 2/O)/sub 2/ with OH gives evidence for formation of ligand radical alone. By contrast. OH attack on Ni/sup II/(CR-2H) and Ni/sup II/(CR+4H) produces Ni(III) intermediates as well as ligand radicals through competitive pathways. The generation of a Ni(III) intermediate appears to parallel the absence of solvent binding at axial positions in the parent Ni(II) complexes. Such behavior may be linked to steric effects and/or electronic considerations.
- Research Organization:
- Univ. of Notre Dame, IN
- OSTI ID:
- 5261128
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 21:5; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Chemical kinetics of nickel(III) macrocyclic complexes. Pulse radiolysis study of Ni/sup II/(CR+4H), Ni/sup II/(CR), and Ni/sup II/(CR-2H) in aqueous solutions of Br/sup -/ and CNS/sup -/. [Gamma radiation]
Anion radical oxidation of nickel(II) macrocyclic complexes. Pulse radiolysis of (2,12-dimethyl-3,7,11,17-tetraazabicyclo(11. 3. 1)heptadeca-1(17),13,15-triene)nickel(II) in sodium bromide solution
Coordination compounds of VO(II), Co(II), Ni(II), Cu(II), and Fe(III) with pantothenic acid: The effect of complex formation on the ligand tautomerism
Journal Article
·
Sat May 01 00:00:00 EDT 1982
· Inorg. Chem.; (United States)
·
OSTI ID:5192778
Anion radical oxidation of nickel(II) macrocyclic complexes. Pulse radiolysis of (2,12-dimethyl-3,7,11,17-tetraazabicyclo(11. 3. 1)heptadeca-1(17),13,15-triene)nickel(II) in sodium bromide solution
Journal Article
·
Fri May 01 00:00:00 EDT 1981
· Inorg. Chem.; (United States)
·
OSTI ID:6399438
Coordination compounds of VO(II), Co(II), Ni(II), Cu(II), and Fe(III) with pantothenic acid: The effect of complex formation on the ligand tautomerism
Journal Article
·
Sun Oct 31 23:00:00 EST 1993
· Russian Journal of Coordination Chemistry
·
OSTI ID:83278
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400600* -- Radiation Chemistry
BUFFERS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
DECOMPOSITION
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXYL RADICALS
IRRADIATION
LIGANDS
NICKEL COMPLEXES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PH VALUE
PULSED IRRADIATION
RADIATION CHEMISTRY
RADIATION EFFECTS
RADICALS
RADIOLYSIS
REACTION INTERMEDIATES
TRANSITION ELEMENT COMPLEXES
WATER
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400600* -- Radiation Chemistry
BUFFERS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
DECOMPOSITION
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXYL RADICALS
IRRADIATION
LIGANDS
NICKEL COMPLEXES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PH VALUE
PULSED IRRADIATION
RADIATION CHEMISTRY
RADIATION EFFECTS
RADICALS
RADIOLYSIS
REACTION INTERMEDIATES
TRANSITION ELEMENT COMPLEXES
WATER