EPR and polarography of nitroazoles. 5. First step in the electrochemical reduction of 2-substituted 5(6)-nitrobenzimidazole using a rotating platinum ring-disk electrode
Journal Article
·
· Chem. Heterocycl. Compd. (Engl. Transl.); (United States)
Using a rotating platinum ring-disk electrode, the electrochemical reduction of 2-substituted 5(6)-nitrobenzimidazoles at the platinum disk in acetonitrile and the oxidation of their radical anions at the ring were studied. During the reduction molecular hydrogen forms by a bimolecular reaction of two primary radical anions. The correlating of electrochemical quantities with the sigma/sub I/, sigma/sub R/, and sigma/sup ./ substituent constants are evidence that E/sub 1/2//sup d/ depends on substituent resonance and induction effects to about the same extent, whereas i/sub lim//sup d/, n, and E/sub 1/2//sup r/ depend predominantly on the resonance effect.
- Research Organization:
- Irkutsk Institute of Organic Chemistry, USSR
- OSTI ID:
- 6334916
- Journal Information:
- Chem. Heterocycl. Compd. (Engl. Transl.); (United States), Journal Name: Chem. Heterocycl. Compd. (Engl. Transl.); (United States) Vol. 21:6; ISSN CHCCA
- Country of Publication:
- United States
- Language:
- English
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EPR and polarography of nitroazoles. 6. 3-Nitro-1,2,4-triazoles
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320302 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Materials
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400400 -- Electrochemistry
ACETONITRILE
ACTIVATION ENERGY
AZOLES
BENZIMIDAZOLES
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DESORPTION
EFFICIENCY
ELECTROCATALYSTS
ELECTRODES
ELECTROLYSIS
ELECTROLYTIC CELLS
ELECTRON SPIN RESONANCE
ELEMENTS
ENERGY
ENERGY EFFICIENCY
HETEROCYCLIC COMPOUNDS
HYDROGEN
IMIDAZOLES
KINETICS
LYSIS
MAGNETIC RESONANCE
METALS
NITRILES
NITRO COMPOUNDS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PLATINUM
PLATINUM METALS
POLAROGRAPHY
REACTION KINETICS
REDOX POTENTIAL
REDUCTION
RESONANCE
TRANSITION ELEMENTS
VOLTAMETRY
320302 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Materials
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400400 -- Electrochemistry
ACETONITRILE
ACTIVATION ENERGY
AZOLES
BENZIMIDAZOLES
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DESORPTION
EFFICIENCY
ELECTROCATALYSTS
ELECTRODES
ELECTROLYSIS
ELECTROLYTIC CELLS
ELECTRON SPIN RESONANCE
ELEMENTS
ENERGY
ENERGY EFFICIENCY
HETEROCYCLIC COMPOUNDS
HYDROGEN
IMIDAZOLES
KINETICS
LYSIS
MAGNETIC RESONANCE
METALS
NITRILES
NITRO COMPOUNDS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PLATINUM
PLATINUM METALS
POLAROGRAPHY
REACTION KINETICS
REDOX POTENTIAL
REDUCTION
RESONANCE
TRANSITION ELEMENTS
VOLTAMETRY