Spontaneous Reduction of a Hydroborane To Generate a B-B Single Bond by the Use of a Lewis Pair.
The ansa-aminohydroborane 1-NMe2 -2-(BH2 )C6 H4 crystallizes in an unprecedented type of dimer containing a B-H bond activated by one FLP moiety. Upon mild heating and without the use of any catalyst, this molecule liberates one equivalent of hydrogen to generate a diborane molecule. The synthesis and structural characterization of these new compounds, as well as the kinetic monitoring of the reaction and the DFT investigation of its mechanism, are reported.
Département de Chimie, Centre de Catalyse et Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec, Québec, G1V 0A6, Canada.
Étienne
É
Rochette
Département de Chimie, Centre de Catalyse et Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec, Québec, G1V 0A6, Canada.
Nicolas
N
Bouchard
Département de Chimie, Centre de Catalyse et Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec, Québec, G1V 0A6, Canada.
Julien
J
Légaré Lavergne
Department of Chemistry and Physics, Mount Saint Vincent University, 166 Bedford Highway, Halifax, Nova Scotia, B3M 2J6, Canada.
Chérif F
CF
Matta
Département de Chimie, Centre de Catalyse et Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec, Québec, G1V 0A6, Canada. frederic.fontaine@chm.ulaval.ca.
Frédéric-Georges
FG
Fontaine
boranes; diboranes; frustrated Lewis pairs; reduction; small-molecule activation