Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

CH3 anion


Gas phase ion energetics data

Go To: Top, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Protonation reactions

CH3- + Hydrogen cation = Methane

By formula: CH3- + H+ = CH4

Quantity Value Units Method Reference Comment
Deltar416.74 ± 0.70kcal/molD-EAEllison, Engelking, et al., 1978gas phase
Deltar418.0 ± 3.5kcal/molCIDTGraul and Squires, 1990gas phase
Deltar>404.18 ± 0.10kcal/molG+TSBohme, Lee-Ruff, et al., 1972gas phase
Deltar414.80kcal/molN/ACheck, Faust, et al., 2001gas phase; FeBr3; ; «DELTA»S(EA)=9.3
Quantity Value Units Method Reference Comment
Deltar408.66 ± 0.80kcal/molH-TSEllison, Engelking, et al., 1978gas phase
Deltar409.9 ± 3.6kcal/molH-TSGraul and Squires, 1990gas phase
Deltar>396.10kcal/molIMRBBohme, Lee-Ruff, et al., 1972gas phase
Deltar407.30kcal/molN/ACheck, Faust, et al., 2001gas phase; FeBr3; ; «DELTA»S(EA)=9.3

References

Go To: Top, Gas phase ion energetics data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Ellison, Engelking, et al., 1978
Ellison, G.B.; Engelking, P.C.; Lineberger, W.C., An experimental determination of the geometry and electron affinity of CH3, J. Am. Chem. Soc., 1978, 100, 2556. [all data]

Graul and Squires, 1990
Graul, S.T.; Squires, R.R., Gas-Phase Acidities Derived from Threshold Energies for Activated Reactions, J. Am. Chem. Soc., 1990, 112, 7, 2517, https://doi.org/10.1021/ja00163a007 . [all data]

Bohme, Lee-Ruff, et al., 1972
Bohme, D.K.; Lee-Ruff, E.; Young, L.B., Acidity order of selected bronsted acids in the gas phase at 300K, J. Am. Chem. Soc., 1972, 94, 5153. [all data]

Check, Faust, et al., 2001
Check, C.E.; Faust, T.O.; Bailey, J.M.; Wright, B.J.; Gilbert, T.M.; Sunderlin, L.S., Addition of Polarization and Diffuse Functions to the LANL2DZ Basis Set for P-Block Elements, J. Phys. Chem. A,, 2001, 105, 34, 8111, https://doi.org/10.1021/jp011945l . [all data]


Notes

Go To: Top, Gas phase ion energetics data, References