Lithium monoxide anion: A ground-state triplet with the strongest base to date
Abstract
Lithium monoxide anion (LiO-) has been generated in the gas phase and is found to be a stronger base than methyl anion (CH3-). This makes LiO- the strongest base currently known, and it will be a challenge to produce a singly charged or multiply charged anion that is more basic. The experimental acidity of lithium hydroxide is ΔH°acid = 425.7 ± 6.1 kcal.mol-1 (1 kcal = 4.184 kJ) and, when combined with results of high-level computations, leads to our best estimate for the acidity of 426 ± 2 kcal.mol-1.
- Publication:
-
Proceedings of the National Academy of Science
- Pub Date:
- June 2008
- DOI:
- Bibcode:
- 2008PNAS..105.7647T
- Keywords:
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- computations;
- mass spectrometry;
- super base;
- Physical Sciences:Chemistry