Ambiphilic Frustrated Lewis Pair Exhibiting High Robustness and Reversible Water Activation: Towards the Metal-Free Hydrogenation of Carbon DioxideReportar como inadecuado




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1

Department of Chemistry, Centre de Catalyse et Chimie Verte C3V, Université Laval, 1045 Avenue de la Médecine, Québec, QC G1V 0A6, Canada

2

Department of Chemistry, University of Toronto, 80 George Street, Toronto, ON M5S 3H6, Canada





*

Author to whom correspondence should be addressed.



Academic Editor: James D. Hoefelmeyer

Abstract The synthesis and structural characterization of a phenylene-bridged Frustrated Lewis Pair FLP having a 2,2,6,6‑tetramethylpiperidine TMP as the Lewis base and a 9-borabicyclo3.3.1nonane BBN as the Lewis acid is reported. This FLP exhibits unique robustness towards the products of carbon dioxide hydrogenation. The compound shows reversible splitting of water, formic acid and methanol while no reaction is observed in the presence of excess formaldehyde. The molecule is incredibly robust, showing little sign of degradation after heating at 80 °C in benzene with 10 equiv. of formic acid for 24 h. The robustness of the system could be exploited in the design of metal-free catalysts for the hydrogenation of carbon dioxide. View Full-Text

Keywords: carbon dioxide; Frustrated Lewis Pairs; hydrogenation; Lewis acid; ambiphilic molecules; catalysis carbon dioxide; Frustrated Lewis Pairs; hydrogenation; Lewis acid; ambiphilic molecules; catalysis





Autor: Étienne Rochette 1, Marc-André Courtemanche 1, Alexander P. Pulis 2, Wenhua Bi 1 and Frédéric-Georges Fontaine 1,*

Fuente: http://mdpi.com/



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