CH3 anion


Gas phase ion energetics data

Go To: Top, Ion clustering data, 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
Δr1743.6 ± 2.9kJ/molD-EAEllison, Engelking, et al., 1978gas phase
Δr1749. ± 15.kJ/molCIDTGraul and Squires, 1990gas phase
Δr>1691.1 ± 0.42kJ/molG+TSBohme, Lee-Ruff, et al., 1972gas phase
Δr1735.5kJ/molN/ACheck, Faust, et al., 2001gas phase; FeBr3; ; ΔS(EA)=9.3
Quantity Value Units Method Reference Comment
Δr1709.8 ± 3.3kJ/molH-TSEllison, Engelking, et al., 1978gas phase
Δr1715. ± 15.kJ/molH-TSGraul and Squires, 1990gas phase
Δr>1657.3kJ/molIMRBBohme, Lee-Ruff, et al., 1972gas phase
Δr1704.1kJ/molN/ACheck, Faust, et al., 2001gas phase; FeBr3; ; ΔS(EA)=9.3

Ion clustering data

Go To: Top, Gas phase ion energetics data, 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

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

(CH3- • 4294967295Methylene) + Methylene = CH3-

By formula: (CH3- • 4294967295CH2) + CH2 = CH3-

Quantity Value Units Method Reference Comment
Δr397.4 ± 3.3kJ/molN/AEllison, Engelking, et al., 1978gas phase

References

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