Photocatalyzed isomerization of 1-pentene by Ru3(CO)12 adsorbed onto porous Vycor glass |
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Authors: | Harry D. Gafney Shu-Ping Xu |
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Affiliation: | Department of Chemistry and Biochemistry, City University of New York, Queens College, Flushing, NY 11367, USA |
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Abstract: | UV photolysis of Ru3(CO)12 physisorbed onto porous Vycor glass leads to the oxidative addition product (μ-H)Ru3(CO)10(μ-OSi). The latter reacts thermally with 1-pentene to form a stable adduct, HRu3(CO)10(OSi)(1-C5H10), and photolysis of the adduct results in isomerization of the alkene. HRu3(CO)10(OSi)(1-C5H10) + hv → (μ-H)Ru3(CO)10(μ-OSi) + 2-pentene As with other photoactivated hybrid systems, the cis-/trans-2-pentene product ratio changes during photolysis. Unlike the other systems, where light generates a thermal catalyst, the data gathered here indicate a photoassisted catalytic process in which photoactivation of HRu3(CO)10(OSi)(1-C5H10) leads to an excited state similar to a π-allyl complex. |
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Keywords: | Photocatalysis Alkene isomerization Ruthenium complexes Carbonyl complexes Cluster complexes Physisorbed complexes |
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