MeS anion
- Formula: CH3S-
- Molecular weight: 47.100
- IUPAC Standard InChI: InChI=1S/CH4S/c1-2/h2H,1H3/p-1
- IUPAC Standard InChIKey: LSDPWZHWYPCBBB-UHFFFAOYSA-M
- CAS Registry Number: 17302-63-5
- Chemical structure:
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Reaction thermochemistry 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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
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Individual Reactions
+
=
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 357.6 ± 2.0 | kcal/mol | D-EA | Schwartz, Davico, et al., 2000 | gas phase; B |
| ΔrH° | 357.5 ± 2.0 | kcal/mol | D-EA | Moran and Ellison, 1988 | gas phase; B |
| ΔrH° | 356.9 ± 2.2 | kcal/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 350.6 ± 2.0 | kcal/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
+
= (
•
)
By formula: CH3S- + H2O = (CH3S- • H2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 15.00 ± 0.20 | kcal/mol | TDAs | Sieck and Meot-ner, 1989 | gas phase; B,M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 21.2 | cal/mol*K | PHPMS | Sieck and Meot-ner, 1989 | gas phase; M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 8.70 ± 0.70 | kcal/mol | TDAs | Sieck and Meot-ner, 1989 | gas phase; B |
+
= (
•
)
By formula: CH3S- + C3H8O = (CH3S- • C3H8O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17.10 ± 0.20 | kcal/mol | TDAs | Sieck and Meot-ner, 1989 | gas phase; B,M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23.1 | cal/mol*K | PHPMS | Sieck and Meot-ner, 1989 | gas phase; M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 10.20 ± 0.80 | kcal/mol | TDAs | Sieck and Meot-ner, 1989 | gas phase; B |
( • 2
) +
= (
• 3
)
By formula: (CH3S- • 2H2O) + H2O = (CH3S- • 3H2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 11.1 | kcal/mol | PHPMS | Sieck and Meot-ner, 1989 | gas phase; M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20.5 | cal/mol*K | PHPMS | Sieck and Meot-ner, 1989 | gas phase; M |
( • 3
) +
= (
• 4
)
By formula: (CH3S- • 3H2O) + H2O = (CH3S- • 4H2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 9.6 | kcal/mol | PHPMS | Sieck and Meot-ner, 1989 | gas phase; M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 19.2 | cal/mol*K | PHPMS | Sieck and Meot-ner, 1989 | gas phase; M |
( •
) +
= (
• 2
)
By formula: (CH3S- • H2O) + H2O = (CH3S- • 2H2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13.5 | kcal/mol | PHPMS | Sieck and Meot-ner, 1989 | gas phase; M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23.5 | cal/mol*K | PHPMS | Sieck and Meot-ner, 1989 | gas phase; M |
( • 4294967295
) +
=
By formula: (CH3S- • 4294967295CH2S) + CH2S = CH3S-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 73.0 ± 3.8 | kcal/mol | N/A | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
References
Go To: Top, Reaction thermochemistry data, 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]
Notes
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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