MeS anion


Reaction thermochemistry data

Go To: Top, Gas phase ion energetics data, Ion clustering data, Vibrational and/or electronic energy levels, References, Notes

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

Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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

MeS anion + Hydrogen cation = Methanethiol

By formula: CH3S- + H+ = CH4S

Quantity Value Units Method Reference Comment
Δr357.6 ± 2.0kcal/molD-EASchwartz, Davico, et al., 2000gas phase; B
Δr357.5 ± 2.0kcal/molD-EAMoran and Ellison, 1988gas phase; B
Δr356.9 ± 2.2kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr350.6 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B

MeS anion + Water = (MeS anion • Water)

By formula: CH3S- + H2O = (CH3S- • H2O)

Quantity Value Units Method Reference Comment
Δr15.00 ± 0.20kcal/molTDAsSieck and Meot-ner, 1989gas phase; B,M
Quantity Value Units Method Reference Comment
Δr21.2cal/mol*KPHPMSSieck and Meot-ner, 1989gas phase; M
Quantity Value Units Method Reference Comment
Δr8.70 ± 0.70kcal/molTDAsSieck and Meot-ner, 1989gas phase; B

MeS anion + Isopropyl Alcohol = (MeS anion • Isopropyl Alcohol)

By formula: CH3S- + C3H8O = (CH3S- • C3H8O)

Quantity Value Units Method Reference Comment
Δr17.10 ± 0.20kcal/molTDAsSieck and Meot-ner, 1989gas phase; B,M
Quantity Value Units Method Reference Comment
Δr23.1cal/mol*KPHPMSSieck and Meot-ner, 1989gas phase; M
Quantity Value Units Method Reference Comment
Δr10.20 ± 0.80kcal/molTDAsSieck and Meot-ner, 1989gas phase; B

(MeS anion • 2Water) + Water = (MeS anion • 3Water)

By formula: (CH3S- • 2H2O) + H2O = (CH3S- • 3H2O)

Quantity Value Units Method Reference Comment
Δr11.1kcal/molPHPMSSieck and Meot-ner, 1989gas phase; M
Quantity Value Units Method Reference Comment
Δr20.5cal/mol*KPHPMSSieck and Meot-ner, 1989gas phase; M

(MeS anion • 3Water) + Water = (MeS anion • 4Water)

By formula: (CH3S- • 3H2O) + H2O = (CH3S- • 4H2O)

Quantity Value Units Method Reference Comment
Δr9.6kcal/molPHPMSSieck and Meot-ner, 1989gas phase; M
Quantity Value Units Method Reference Comment
Δr19.2cal/mol*KPHPMSSieck and Meot-ner, 1989gas phase; M

(MeS anion • Water) + Water = (MeS anion • 2Water)

By formula: (CH3S- • H2O) + H2O = (CH3S- • 2H2O)

Quantity Value Units Method Reference Comment
Δr13.5kcal/molPHPMSSieck and Meot-ner, 1989gas phase; M
Quantity Value Units Method Reference Comment
Δr23.5cal/mol*KPHPMSSieck and Meot-ner, 1989gas phase; M

(MeS anion • 4294967295Thioformaldehyde) + Thioformaldehyde = MeS anion

By formula: (CH3S- • 4294967295CH2S) + CH2S = CH3S-

Quantity Value Units Method Reference Comment
Δr73.0 ± 3.8kcal/molN/ABartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry data, Ion clustering data, Vibrational and/or electronic energy levels, 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

MeS anion + Hydrogen cation = Methanethiol

By formula: CH3S- + H+ = CH4S

Quantity Value Units Method Reference Comment
Δr357.6 ± 2.0kcal/molD-EASchwartz, Davico, et al., 2000gas phase
Δr357.5 ± 2.0kcal/molD-EAMoran and Ellison, 1988gas phase
Δr356.9 ± 2.2kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Δr350.6 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale

Ion clustering data

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References, Notes

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

Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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

(MeS anion • 4294967295Thioformaldehyde) + Thioformaldehyde = MeS anion

By formula: (CH3S- • 4294967295CH2S) + CH2S = CH3S-

Quantity Value Units Method Reference Comment
Δr73.0 ± 3.8kcal/molN/ABartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B

MeS anion + Isopropyl Alcohol = (MeS anion • Isopropyl Alcohol)

By formula: CH3S- + C3H8O = (CH3S- • C3H8O)

Quantity Value Units Method Reference Comment
Δr17.10 ± 0.20kcal/molTDAsSieck and Meot-ner, 1989gas phase; B,M
Quantity Value Units Method Reference Comment
Δr23.1cal/mol*KPHPMSSieck and Meot-ner, 1989gas phase; M
Quantity Value Units Method Reference Comment
Δr10.20 ± 0.80kcal/molTDAsSieck and Meot-ner, 1989gas phase; B

MeS anion + Water = (MeS anion • Water)

By formula: CH3S- + H2O = (CH3S- • H2O)

Quantity Value Units Method Reference Comment
Δr15.00 ± 0.20kcal/molTDAsSieck and Meot-ner, 1989gas phase; B,M
Quantity Value Units Method Reference Comment
Δr21.2cal/mol*KPHPMSSieck and Meot-ner, 1989gas phase; M
Quantity Value Units Method Reference Comment
Δr8.70 ± 0.70kcal/molTDAsSieck and Meot-ner, 1989gas phase; B

(MeS anion • Water) + Water = (MeS anion • 2Water)

By formula: (CH3S- • H2O) + H2O = (CH3S- • 2H2O)

Quantity Value Units Method Reference Comment
Δr13.5kcal/molPHPMSSieck and Meot-ner, 1989gas phase; M
Quantity Value Units Method Reference Comment
Δr23.5cal/mol*KPHPMSSieck and Meot-ner, 1989gas phase; M

(MeS anion • 2Water) + Water = (MeS anion • 3Water)

By formula: (CH3S- • 2H2O) + H2O = (CH3S- • 3H2O)

Quantity Value Units Method Reference Comment
Δr11.1kcal/molPHPMSSieck and Meot-ner, 1989gas phase; M
Quantity Value Units Method Reference Comment
Δr20.5cal/mol*KPHPMSSieck and Meot-ner, 1989gas phase; M

(MeS anion • 3Water) + Water = (MeS anion • 4Water)

By formula: (CH3S- • 3H2O) + H2O = (CH3S- • 4H2O)

Quantity Value Units Method Reference Comment
Δr9.6kcal/molPHPMSSieck and Meot-ner, 1989gas phase; M
Quantity Value Units Method Reference Comment
Δr19.2cal/mol*KPHPMSSieck and Meot-ner, 1989gas phase; M

Vibrational and/or electronic energy levels

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, 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: Marilyn E. Jacox

State:   ?


 Energy 
 (cm-1
 Med.   Transition   λmin 
 (nm) 
 λmax 
 (nm) 
 References

Td = 15060 ± 30 gas Engleking, Ellison, et al., 1978
Janousek and Brauman, 1980
Moran and Ellison, 1988
Schwartz, Davico, et al., 2000, 2

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

a1 3 CS stretch 410 ± 30 gas PE Schwartz, Davico, et al., 2000, 2

Additional references: Jacox, 1994, page 242; Jacox, 2003, page 261

Notes

dPhotodissociation threshold

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Vibrational and/or electronic energy levels, Notes

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

Schwartz, Davico, et al., 2000
Schwartz, R.L.; Davico, G.E.; Lineberger, W.C., Negative-ion photoelectron spectroscopy of CH3S-, J. Electron Spectros. Rel. Phenom., 2000, 108, 1-3, 163-168, https://doi.org/10.1016/S0368-2048(00)00125-0 . [all data]

Moran and Ellison, 1988
Moran, S.; Ellison, G.B., Photoelectron Spectroscopy of Sulfur Ions, J. Phys. Chem., 1988, 92, 7, 1794, https://doi.org/10.1021/j100318a021 . [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Sieck and Meot-ner, 1989
Sieck, L.W.; Meot-ner, M., Ionic Hydrogen Bond and Ion Solvation. 8. RS-..HOR Bond Strengths. Correlation with Acidities., J. Phys. Chem., 1989, 93, 4, 1586, https://doi.org/10.1021/j100341a079 . [all data]

Engleking, Ellison, et al., 1978
Engleking, P.C.; Ellison, G.B.; Lineberger, W.C., Laser photodetachment electron spectrometry of methoxide, deuteromethoxide, and thiomethoxide: Electron affinities and vibrational structure of CH3O, and CH3S, J. Chem. Phys., 1978, 69, 1826. [all data]

Janousek and Brauman, 1980
Janousek, B.K.; Brauman, J.I., Electron photodetachment of thiomethoxyl and deuterothiomethoxyl anions: Electron affinities, vibrational frequencies, and spin-orbit splitting in CH3S- and CD3S-, J. Chem. Phys., 1980, 72, 694. [all data]

Schwartz, Davico, et al., 2000, 2
Schwartz, R.L.; Davico, G.E.; Lineberger, W.C., Negative-ion photoelectron spectroscopy of CH3S-, J. Electron Spectrosc. Relat. Phenom., 2000, 108, 1-3, 163, https://doi.org/10.1016/S0368-2048(00)00125-0 . [all data]

Jacox, 1994
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]

Jacox, 2003
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement B, J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629 . [all data]


Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Vibrational and/or electronic energy levels, References