Influence of radical initiators in gold catalysis: Evidence supporting trapping of radicals derived from azobis(isobutyronitrile) by gold halides

Mercedes Álvaro; Carmela Aprile; Avelino Corma; Belén Ferrer; Hermenegildo García

doi:10.1016/j.jcat.2006.10.003

Influence of radical initiators in gold catalysis: Evidence supporting trapping of radicals derived from azobis(isobutyronitrile) by gold halides

Mercedes Álvaro, Carmela Aprile, Avelino Corma, Belén Ferrer, Hermenegildo García

Unit of nanomaterials chemistry

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

Abstract

Gold halides (AuCl₃, HAuCl₄, and AuCl) efficiently trap the radicals generated in the room-temperature photolysis of azobis(isobutyronitrile) (AIBN) to give an organogold H[(CH₃)₂CCN]₂AuCl₂ compound that has been characterized by spectroscopy. The characteristic features of the organogold are a quaternary carbon at 100 ppm on ¹³C NMR and a HR-MS peak with a molecular formula of C₈H₁₃N₂AuCl. Catalytic data for cyclohexene aerobic oxidation confirms the beneficial influence of the presence of AIBN on the catalytic activity of Au/CeO₂.

Original language	English
Pages (from-to)	249-252
Number of pages	4
Journal	Journal of Catalysis
Volume	245
Issue number	1
DOIs	https://doi.org/10.1016/j.jcat.2006.10.003
Publication status	Published - 1 Jan 2007

Keywords

Gold catalysis
Organogold
Radical initiators
Radical trapping

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10.1016/j.jcat.2006.10.003

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title = "Influence of radical initiators in gold catalysis: Evidence supporting trapping of radicals derived from azobis(isobutyronitrile) by gold halides",

abstract = "Gold halides (AuCl3, HAuCl4, and AuCl) efficiently trap the radicals generated in the room-temperature photolysis of azobis(isobutyronitrile) (AIBN) to give an organogold H[(CH3)2CCN]2AuCl2 compound that has been characterized by spectroscopy. The characteristic features of the organogold are a quaternary carbon at 100 ppm on 13C NMR and a HR-MS peak with a molecular formula of C8H13N2AuCl. Catalytic data for cyclohexene aerobic oxidation confirms the beneficial influence of the presence of AIBN on the catalytic activity of Au/CeO2.",

keywords = "Gold catalysis, Organogold, Radical initiators, Radical trapping",

author = "Mercedes {\'A}lvaro and Carmela Aprile and Avelino Corma and Bel{\'e}n Ferrer and Hermenegildo Garc{\'i}a",

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T1 - Influence of radical initiators in gold catalysis: Evidence supporting trapping of radicals derived from azobis(isobutyronitrile) by gold halides

AU - Álvaro, Mercedes

AU - Aprile, Carmela

AU - Corma, Avelino

AU - Ferrer, Belén

AU - García, Hermenegildo

PY - 2007/1/1

Y1 - 2007/1/1

N2 - Gold halides (AuCl3, HAuCl4, and AuCl) efficiently trap the radicals generated in the room-temperature photolysis of azobis(isobutyronitrile) (AIBN) to give an organogold H[(CH3)2CCN]2AuCl2 compound that has been characterized by spectroscopy. The characteristic features of the organogold are a quaternary carbon at 100 ppm on 13C NMR and a HR-MS peak with a molecular formula of C8H13N2AuCl. Catalytic data for cyclohexene aerobic oxidation confirms the beneficial influence of the presence of AIBN on the catalytic activity of Au/CeO2.

AB - Gold halides (AuCl3, HAuCl4, and AuCl) efficiently trap the radicals generated in the room-temperature photolysis of azobis(isobutyronitrile) (AIBN) to give an organogold H[(CH3)2CCN]2AuCl2 compound that has been characterized by spectroscopy. The characteristic features of the organogold are a quaternary carbon at 100 ppm on 13C NMR and a HR-MS peak with a molecular formula of C8H13N2AuCl. Catalytic data for cyclohexene aerobic oxidation confirms the beneficial influence of the presence of AIBN on the catalytic activity of Au/CeO2.

KW - Gold catalysis

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KW - Radical initiators

KW - Radical trapping

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Influence of radical initiators in gold catalysis: Evidence supporting trapping of radicals derived from azobis(isobutyronitrile) by gold halides

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Keywords

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