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

Methanethiol

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Ion clustering 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 as indicated in comments:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - 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

CH6N+ + Methanethiol = (CH6N+ bullet Methanethiol)

By formula: CH6N+ + CH4S = (CH6N+ bullet CH4S)

Quantity Value Units Method Reference Comment
Deltar56.1kJ/molPHPMSMeot-Ner (Mautner) and Sieck, 1985gas phase; M
Quantity Value Units Method Reference Comment
Deltar92.5J/mol*KPHPMSMeot-Ner (Mautner) and Sieck, 1985gas phase; M

(CH6N+ bullet Acetonitrile) + Methanethiol = (CH6N+ bullet Methanethiol bullet Acetonitrile)

By formula: (CH6N+ bullet C2H3N) + CH4S = (CH6N+ bullet CH4S bullet C2H3N)

Quantity Value Units Method Reference Comment
Deltar41.kJ/molPHPMSMeot-Ner (Mautner) and Sieck, 1985gas phase; M
Quantity Value Units Method Reference Comment
Deltar83.7J/mol*KPHPMSMeot-Ner (Mautner) and Sieck, 1985gas phase; M

(CH6N+ bullet 2Acetonitrile) + Methanethiol = (CH6N+ bullet Methanethiol bullet 2Acetonitrile)

By formula: (CH6N+ bullet 2C2H3N) + CH4S = (CH6N+ bullet CH4S bullet 2C2H3N)

Quantity Value Units Method Reference Comment
Deltar33.kJ/molPHPMSMeot-Ner (Mautner) and Sieck, 1985gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Deltar84.J/mol*KN/AMeot-Ner (Mautner) and Sieck, 1985gas phase; Entropy change calculated or estimated; M

Free energy of reaction

DeltarG° (kJ/mol) T (K) Method Reference Comment
10.270.PHPMSMeot-Ner (Mautner) and Sieck, 1985gas phase; Entropy change calculated or estimated; M

MeCO2 anion + Methanethiol = (MeCO2 anion bullet Methanethiol)

By formula: C2H3O2- + CH4S = (C2H3O2- bullet CH4S)

Quantity Value Units Method Reference Comment
Deltar62.3 ± 4.2kJ/molTDAsMeot-ner, 1988gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar95.4J/mol*KPHPMSMeot-ner, 1988gas phase; M
Quantity Value Units Method Reference Comment
Deltar34. ± 4.2kJ/molTDAsMeot-ner, 1988gas phase; B

Chlorine anion + Methanethiol = (Chlorine anion bullet Methanethiol)

By formula: Cl- + CH4S = (Cl- bullet CH4S)

Quantity Value Units Method Reference Comment
Deltar65. ± 13.kJ/molIMRBStaneke, Groothuis, et al., 1995gas phase; Chloride affinity comparable to that of CHCl3; B
Quantity Value Units Method Reference Comment
Deltar45. ± 13.kJ/molIMRBStaneke, Groothuis, et al., 1995gas phase; Chloride affinity comparable to that of CHCl3; B

Fluorine anion + Methanethiol = (Fluorine anion bullet Methanethiol)

By formula: F- + CH4S = (F- bullet CH4S)

Quantity Value Units Method Reference Comment
Deltar143. ± 8.4kJ/molIMRELarson and McMahon, 1983gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B,M
Quantity Value Units Method Reference Comment
Deltar97.1J/mol*KN/ALarson and McMahon, 1983gas phase; switching reaction(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
Quantity Value Units Method Reference Comment
Deltar114. ± 8.4kJ/molIMRELarson and McMahon, 1983gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B,M

References

Go To: Top, Ion clustering data, Notes

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

Meot-Ner (Mautner) and Sieck, 1985
Meot-Ner (Mautner), M.; Sieck, L.W., The Ionic Hydrogen Bond and Ion Solvation. 4. SH+ O and NH+ S Bonds. Correlations with Proton Affinity. Mutual Effects of Weak and Strong Ligands in Mixed Clusters, J. Phys. Chem., 1985, 89, 24, 5222, https://doi.org/10.1021/j100270a021 . [all data]

Meot-ner, 1988
Meot-ner, M., Ionic Hydrogen Bond and Ion Solvation. 6. Interaction Energies of the Acetate Ion with Organic Molecules. Comparison of CH3COO- with Cl-, CN-, and SH-, J. Am. Chem. Soc., 1988, 110, 12, 3854, https://doi.org/10.1021/ja00220a022 . [all data]

Staneke, Groothuis, et al., 1995
Staneke, P.O.; Groothuis, G.; Ingemann, S.; Nibbering, N.M.M., Formation, stability and structure of radical anions of chloroform, tetrachloromethane and fluorotrichloromethane in the gas phase, Int. J. Mass Spectrom. Ion Proc., 1995, 142, 1-2, 83, https://doi.org/10.1016/0168-1176(94)04127-S . [all data]

Larson and McMahon, 1983
Larson, J.W.; McMahon, T.B., Strong hydrogen bonding in gas-phase anions. An ion cyclotron resonance determination of fluoride binding energetics to bronsted acids from gas-phase fluoride exchange equilibria measurements, J. Am. Chem. Soc., 1983, 105, 2944. [all data]

Wenthold and Squires, 1995
Wenthold, P.G.; Squires, R.R., Bond dissociation energies of F2(-) and HF2(-). A gas-phase experimental and G2 theoretical study, J. Phys. Chem., 1995, 99, 7, 2002, https://doi.org/10.1021/j100007a034 . [all data]

Arshadi, Yamdagni, et al., 1970
Arshadi, M.; Yamdagni, R.; Kebarle, P., Hydration of Halide Negative Ions in the Gas Phase. II. Comparison of Hydration Energies for the Alkali Positive and Halide Negative Ions, J. Phys. Chem., 1970, 74, 7, 1475, https://doi.org/10.1021/j100702a014 . [all data]


Notes

Go To: Top, Ion clustering data, References