L-Methionine anion


Reaction thermochemistry data

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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. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

L-Methionine anion + Hydrogen cation = DL-Methionine

By formula: C5H10NO2S- + H+ = C5H11NO2S

Quantity Value Units Method Reference Comment
Δr1407. ± 9.2kJ/molCIDCJones, Bernier, et al., 2007gas phase
Δr1405. ± 13.kJ/molG+TSO'Hair, Bowie, et al., 1992gas phase
Quantity Value Units Method Reference Comment
Δr1376. ± 13.kJ/molCIDCO'Hair, Bowie, et al., 1992gas phase

L-Methionine anion + Water = C5H12NO3S-

By formula: C5H10NO2S- + H2O = C5H12NO3S-

Quantity Value Units Method Reference Comment
Δr60.7 ± 2.1kJ/molN/AWincel, 2008gas phase
Quantity Value Units Method Reference Comment
Δr29.7 ± 3.3kJ/molTDAsWincel, 2008gas phase

Gas phase ion energetics data

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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

Electron affinity of neutral species

EAneutral (eV) Method Reference Comment
3.94 ± 0.19D-EAO'Hair, Bowie, et al., 1992 

Protonation reactions

L-Methionine anion + Hydrogen cation = DL-Methionine

By formula: C5H10NO2S- + H+ = C5H11NO2S

Quantity Value Units Method Reference Comment
Δr1407. ± 9.2kJ/molCIDCJones, Bernier, et al., 2007gas phase
Δr1405. ± 13.kJ/molG+TSO'Hair, Bowie, et al., 1992gas phase
Quantity Value Units Method Reference Comment
Δr1376. ± 13.kJ/molCIDCO'Hair, Bowie, et al., 1992gas phase

Ion clustering data

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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

L-Methionine anion + Water = C5H12NO3S-

By formula: C5H10NO2S- + H2O = C5H12NO3S-

Quantity Value Units Method Reference Comment
Δr60.7 ± 2.1kJ/molN/AWincel, 2008gas phase
Quantity Value Units Method Reference Comment
Δr29.7 ± 3.3kJ/molTDAsWincel, 2008gas phase

References

Go To: Top, Reaction thermochemistry data, 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.

Jones, Bernier, et al., 2007
Jones, C.M.; Bernier, M.; Carson, E.; Colyer, K.E.; Metz, R.; Pawlow, A.; Wischow, E.D.; Webb, I.; Andriole, E.J.; Poutsma, J.C., Gas-phase Acities of the 20 Protein Amino Acids, Int. J. Mass Spectrom., 2007, 267, 1-3, 54-62, https://doi.org/10.1016/j.ijms.2007.02.018 . [all data]

O'Hair, Bowie, et al., 1992
O'Hair, R.J.; Bowie, J.H.; Gronert, S., Gas Phase Acidity of the alpha-Amino Acids, Int. J. Mass Spectrom. Ion Proc., 1992, 117, 23, https://doi.org/10.1016/0168-1176(92)80083-D . [all data]

Wincel, 2008
Wincel, H., Hydration energies of deprotonated amino acids from gas phase equilibria measurements, J. Am. Soc. Mass Spectrom., 2008, 19, 8, 1091-1097, https://doi.org/10.1016/j.jasms.2008.05.014 . [all data]


Notes

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