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Updated: Jan 6, 2026

Characterizing Lewis Pairs Using Titration Coupled with In Situ Infrared Spectroscopy
Published on: February 20, 2020
Cleaving a C-F bond of C6F6 at a gallium(I) centre catalyzed by nitrogen-containing Lewis bases and its kinetic
1Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Tokai National Higher Education and Research System, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
Abstract:
Gallylenes, gallium(I) molecules in the oxidation state of +1, supported by a NacNac or Boxm ligand, underwent an efficient C-F bond cleavage of C6F6 upon addition of a stoichiometric/catalytic amount of nitrogen-containing Lewis bases (LBs). Kinetic studies revealed that the C-F bond cleavage was first-order in terms of the concentrations of gallylene and the added nitrogen-containing LBs. The reaction rate also depended on the nitrogen-containing LBs. DFT calculations indicated that the coordination of nitrogen-containing LBs to the Ga centre increased the energy level of the HOMO, which was contributed by a lone pair of electrons at the Ga centre. These results underscore the utility of Lewis base modulation in main-group-mediated bond cleavage.
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