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Synthesize tetranuclear cobalt(III)-oxo cubane clusters and evaluate their structural, spectral, electrochemical, and catalytic oxidation properties.

October 1, 2007Inorganic Chemistry

Synthesis, Structure, Spectral and Electrochemical Properties, and Catalytic Use of Cobalt(III)−Oxo Cubane Clusters

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Synthesize tetranuclear cobalt(III)-oxo cubane clusters and evaluate their structural, spectral, electrochemical, and catalytic oxidation properties.
Synthesized Co4O4(O2CMe)4L4 complexes through hydrogen peroxide oxidation of cobalt(II), acetate, and pyridine derivatives in methanol.
Characterized molecular structures and solution behavior via X-ray crystallography, infrared, proton NMR, and ultraviolet-visible spectroscopy.
Assessed electrochemical redox properties using cyclic and differential pulse voltammetry, followed by catalytic testing in neat ethylbenzene and p-xylene aerobic oxidation.
X-ray crystallography revealed a hexacoordinate [Co4(mu3-O)4]4+ cubane-like core with Co-Co distances of approximately 2.75 Å.
Electrochemical measurements demonstrated a reversible one-electron oxidation from Co(III)4 to a Co(III)3Co(IV) core at half-wave potentials below 1.0 V.
Catalytic screening showed successful activation of the clusters in the aerobic oxidation of neat ethylbenzene and p-xylene.

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Implication

Laboratory investigation demonstrates reversible oxidation of cobalt(III)-oxo cubane clusters, indicating potential utility as catalysts for aerobic hydrocarbon oxidation.

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Chakrabarty et al. (2007) studied this question.

synapsesocial.com/papers/69d6cb108dca315383ed900f https://doi.org/10.1021/ic7011759

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Implication

Laboratory investigation demonstrates reversible oxidation of cobalt(III)-oxo cubane clusters, indicating potential utility as catalysts for aerobic hydrocarbon oxidation.

Synthesis, Structure, Spectral and Electrochemical Properties, and Catalytic Use of Cobalt(III)−Oxo Cubane Clusters

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Discussion

Implication

Cite This Study

Synthesis, Structure, Spectral and Electrochemical Properties, and Catalytic Use of Cobalt(III)−Oxo Cubane Clusters

Key Points

Discussion

Implication

Cite This Study

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