Lithium monoxide anion: A ground-state triplet with the strongest base to date

Zhixin Tian; Bun Chan; Michael B. Sullivan; Leo Radom; Steven R. Kass

doi:10.1073/pnas.0801393105

Lithium monoxide anion: A ground-state triplet with the strongest base to date

Zhixin Tian, Bun Chan, Michael B. Sullivan, Leo Radom, Steven R. Kass

Chemistry (Twin Cities)

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

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.

Original language	English (US)
Pages (from-to)	7647-7651
Number of pages	5
Journal	Proceedings of the National Academy of Sciences of the United States of America
Volume	105
Issue number	22
DOIs	https://doi.org/10.1073/pnas.0801393105
State	Published - Jun 3 2008

Keywords

Computations
Mass spectrometry
Super base

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T2 - A ground-state triplet with the strongest base to date

AU - Tian, Zhixin

AU - Chan, Bun

AU - Sullivan, Michael B.

AU - Radom, Leo

AU - Kass, Steven R.

PY - 2008/6/3

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N2 - 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 ΔHacid° = 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.

AB - 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 ΔHacid° = 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.

KW - Computations

KW - Mass spectrometry

KW - Super base

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Lithium monoxide anion: A ground-state triplet with the strongest base to date

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