Solvent and electrolyte effects on Ni(PR2NR′2)2-catalyzed electrochemical oxidation of hydrogen

Ryan M. Stolley; Jonathan M. Darmon; Monte L. Helm

doi:10.1039/c4cc00295d

Solvent and electrolyte effects on Ni(P^R₂N^R′₂)₂-catalyzed electrochemical oxidation of hydrogen

Ryan M. Stolley, Jonathan M. Darmon, Monte L. Helm

Pacific Northwest National Laboratory

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

We report solvent and electrolyte effects on the electrocatalytic oxidation of H₂ using Ni(P^Cy₂N^R′₂)₂ (R = Bn, ^tBu) complexes. A turnover frequency of 46 s⁻¹ for Ni(P^Cy₂N^Bn₂)₂ was obtained using 0.2 M [ⁿBu₄N][BF₄] in THF. A turnover frequency of 51 s⁻¹ was observed for Ni(P^Cy₂N^tBu₂)₂ using 0.2 M [ⁿBu₄N][B(C₆F₅)₄] in fluorobenzene. These observations, in conjunction with previous studies, indicate nitrile binding inhibits catalysis supported by Ni(P^Cy₂N^Bn₂)₂.

Original language	English
Pages (from-to)	3681-3684
Number of pages	4
Journal	Chemical Communications
Volume	50
Issue number	28
DOIs	https://doi.org/10.1039/c4cc00295d
Publication status	Published - Mar 11 2014

ASJC Scopus subject areas

Catalysis
Electronic, Optical and Magnetic Materials
Ceramics and Composites
Chemistry(all)
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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abstract = "We report solvent and electrolyte effects on the electrocatalytic oxidation of H2 using Ni(PCy2NR′2)2 (R = Bn, tBu) complexes. A turnover frequency of 46 s−1 for Ni(PCy2NBn2)2 was obtained using 0.2 M [nBu4N][BF4] in THF. A turnover frequency of 51 s−1 was observed for Ni(PCy2NtBu2)2 using 0.2 M [nBu4N][B(C6F5)4] in fluorobenzene. These observations, in conjunction with previous studies, indicate nitrile binding inhibits catalysis supported by Ni(PCy2NBn2)2.",

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AU - Stolley, Ryan M.

AU - Darmon, Jonathan M.

AU - Helm, Monte L.

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N2 - We report solvent and electrolyte effects on the electrocatalytic oxidation of H2 using Ni(PCy2NR′2)2 (R = Bn, tBu) complexes. A turnover frequency of 46 s−1 for Ni(PCy2NBn2)2 was obtained using 0.2 M [nBu4N][BF4] in THF. A turnover frequency of 51 s−1 was observed for Ni(PCy2NtBu2)2 using 0.2 M [nBu4N][B(C6F5)4] in fluorobenzene. These observations, in conjunction with previous studies, indicate nitrile binding inhibits catalysis supported by Ni(PCy2NBn2)2.

AB - We report solvent and electrolyte effects on the electrocatalytic oxidation of H2 using Ni(PCy2NR′2)2 (R = Bn, tBu) complexes. A turnover frequency of 46 s−1 for Ni(PCy2NBn2)2 was obtained using 0.2 M [nBu4N][BF4] in THF. A turnover frequency of 51 s−1 was observed for Ni(PCy2NtBu2)2 using 0.2 M [nBu4N][B(C6F5)4] in fluorobenzene. These observations, in conjunction with previous studies, indicate nitrile binding inhibits catalysis supported by Ni(PCy2NBn2)2.

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Solvent and electrolyte effects on Ni(P^R₂N^R′₂)₂-catalyzed electrochemical oxidation of hydrogen

Abstract

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