Open AccessLithium monoxide anion: A ground-state triplet with the strongest base to date
Author(s) -
Zhixin Tian,
Bun Chan,
Michael B. Sullivan,
Leo Radom,
Steven R. Kass
Publication year - 2008
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.0801393105
Subject(s) - base (topology) , ion , chemistry , monoxide , hydroxide , lithium (medication) , carbon monoxide , ground state , gas phase , inorganic chemistry , acid–base reaction , lithium hydroxide , atomic physics , organic chemistry , catalysis , physics , medicine , mathematical analysis , mathematics , ion exchange , endocrinology
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 .