Kinetic Investigation of the Reaction of Octacarbonyl Dicobalt with 2,2,6,6-Tetramethylpiperidin-1-oxyl

Róbert Tuba; Ferenc Szeifert; Ferenc Ungváry

doi:10.1023/A:1022679010866

Kinetic Investigation of the Reaction of Octacarbonyl Dicobalt with 2,2,6,6-Tetramethylpiperidin-1-oxyl

Róbert Tuba, Ferenc Szeifert, Ferenc Ungváry

Pannon University

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

The initial rate of carbon monoxide evolution in the reaction of octacarbonyl dicobalt with 2,2,6,6-tetramethylpiperidin-1-oxyl free radical (TEMPO) at 15°C in n-octane solution leading to the 16e complex (TEMPO)Co(CO)₂ was found to be first order with respect to the TEMPO concentration, 0.5 order with respect to the Co₂(CO)₈ concentration, and negative 0.5 order with respect to the CO concentration. Scavenging •Co(CO)₄ and •Co(CO)₃ by the free radical TEMPO in the rate-determining steps are in accord with the kinetic observation. The observed rate constant is k_obs = 6.4 x 10^-5 s^-1.

Original language	English
Pages (from-to)	289-294
Number of pages	6
Journal	Journal of Cluster Science
Volume	9
Issue number	3
DOIs	https://doi.org/10.1023/A:1022679010866
Publication status	Published - Jan 1 1998

Keywords

2,2,6,6-tetramethylpiperidin-1-oxyl
Kinetics of carbon monoxide evolution
Octacarbonyl dicobalt

ASJC Scopus subject areas

Biochemistry
Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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Tuba, R., Szeifert, F., & Ungváry, F. (1998). Kinetic Investigation of the Reaction of Octacarbonyl Dicobalt with 2,2,6,6-Tetramethylpiperidin-1-oxyl. Journal of Cluster Science, 9(3), 289-294. https://doi.org/10.1023/A:1022679010866

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abstract = "The initial rate of carbon monoxide evolution in the reaction of octacarbonyl dicobalt with 2,2,6,6-tetramethylpiperidin-1-oxyl free radical (TEMPO) at 15°C in n-octane solution leading to the 16e complex (TEMPO)Co(CO)2 was found to be first order with respect to the TEMPO concentration, 0.5 order with respect to the Co2(CO)8 concentration, and negative 0.5 order with respect to the CO concentration. Scavenging •Co(CO)4 and •Co(CO)3 by the free radical TEMPO in the rate-determining steps are in accord with the kinetic observation. The observed rate constant is kobs = 6.4 x 10-5 s-1.",

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AU - Ungváry, Ferenc

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N2 - The initial rate of carbon monoxide evolution in the reaction of octacarbonyl dicobalt with 2,2,6,6-tetramethylpiperidin-1-oxyl free radical (TEMPO) at 15°C in n-octane solution leading to the 16e complex (TEMPO)Co(CO)2 was found to be first order with respect to the TEMPO concentration, 0.5 order with respect to the Co2(CO)8 concentration, and negative 0.5 order with respect to the CO concentration. Scavenging •Co(CO)4 and •Co(CO)3 by the free radical TEMPO in the rate-determining steps are in accord with the kinetic observation. The observed rate constant is kobs = 6.4 x 10-5 s-1.

AB - The initial rate of carbon monoxide evolution in the reaction of octacarbonyl dicobalt with 2,2,6,6-tetramethylpiperidin-1-oxyl free radical (TEMPO) at 15°C in n-octane solution leading to the 16e complex (TEMPO)Co(CO)2 was found to be first order with respect to the TEMPO concentration, 0.5 order with respect to the Co2(CO)8 concentration, and negative 0.5 order with respect to the CO concentration. Scavenging •Co(CO)4 and •Co(CO)3 by the free radical TEMPO in the rate-determining steps are in accord with the kinetic observation. The observed rate constant is kobs = 6.4 x 10-5 s-1.

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