Kinetics of Reduction of Some CoIII(NH3)5 L Complexes by Substituted Pyridinyl Radicals. A Pulse Radiolytic Study

H. Cohen; D. Meyerstein

doi:10.1002/ijch.197400100

Kinetics of Reduction of Some Co^III(NH₃)₅ L Complexes by Substituted Pyridinyl Radicals. A Pulse Radiolytic Study

H. Cohen, D. Meyerstein

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Abstract

The rates of reduction of some Co^III pentaamine complexes by HINA·, and , HNA·, radicals were measured. It was found that HNA· is more reactive than HINA·. The redox potential for the couple HINA·/HINA⁺ was calculated, E° = 0.80 ± 0.02 V. In the presence of large excess of NA, a catalytic enhancement in the reduction of Co^III(NH₃)₅ NA and Co^III(NH₃)₅ Pyridine by Eu²⁺ was observed. The difference in the mechanism of reduction of Co^III(NH₃)₅ X by Eu²⁺ where X = NA or INA is discussed. The redox potential of the HNA·/HNA⁺ couple was estimated, 0.80 < E° < 1.1 V.

Original language	English
Pages (from-to)	1049-1057
Number of pages	9
Journal	Israel Journal of Chemistry
Volume	12
Issue number	6
DOIs	https://doi.org/10.1002/ijch.197400100
State	Published - 1 Jan 1974
Externally published	Yes

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General Chemistry

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title = "Kinetics of Reduction of Some CoIII(NH3)5 L Complexes by Substituted Pyridinyl Radicals. A Pulse Radiolytic Study",

abstract = "The rates of reduction of some CoIII pentaamine complexes by HINA·, and , HNA·, radicals were measured. It was found that HNA· is more reactive than HINA·. The redox potential for the couple HINA·/HINA+ was calculated, E° = 0.80 ± 0.02 V. In the presence of large excess of NA, a catalytic enhancement in the reduction of CoIII(NH3)5 NA and CoIII(NH3)5 Pyridine by Eu2+ was observed. The difference in the mechanism of reduction of CoIII(NH3)5 X by Eu2+ where X = NA or INA is discussed. The redox potential of the HNA·/HNA+ couple was estimated, 0.80 < E° < 1.1 V.",

author = "H. Cohen and D. Meyerstein",

year = "1974",

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AU - Cohen, H.

AU - Meyerstein, D.

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Y1 - 1974/1/1

N2 - The rates of reduction of some CoIII pentaamine complexes by HINA·, and , HNA·, radicals were measured. It was found that HNA· is more reactive than HINA·. The redox potential for the couple HINA·/HINA+ was calculated, E° = 0.80 ± 0.02 V. In the presence of large excess of NA, a catalytic enhancement in the reduction of CoIII(NH3)5 NA and CoIII(NH3)5 Pyridine by Eu2+ was observed. The difference in the mechanism of reduction of CoIII(NH3)5 X by Eu2+ where X = NA or INA is discussed. The redox potential of the HNA·/HNA+ couple was estimated, 0.80 < E° < 1.1 V.

AB - The rates of reduction of some CoIII pentaamine complexes by HINA·, and , HNA·, radicals were measured. It was found that HNA· is more reactive than HINA·. The redox potential for the couple HINA·/HINA+ was calculated, E° = 0.80 ± 0.02 V. In the presence of large excess of NA, a catalytic enhancement in the reduction of CoIII(NH3)5 NA and CoIII(NH3)5 Pyridine by Eu2+ was observed. The difference in the mechanism of reduction of CoIII(NH3)5 X by Eu2+ where X = NA or INA is discussed. The redox potential of the HNA·/HNA+ couple was estimated, 0.80 < E° < 1.1 V.

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DO - 10.1002/ijch.197400100

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Kinetics of Reduction of Some Co^III(NH₃)₅ L Complexes by Substituted Pyridinyl Radicals. A Pulse Radiolytic Study

Abstract

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