MeCðC anion
- Formula: C3H3-
- Molecular weight: 39.0565
- CAS Registry Number: 36147-87-2
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Reaction thermochemistry data
Go To: Top, 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
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 380.3 ± 2.1 | kcal/mol | G+TS | Gal, Decouzon, et al., 2001 | gas phase |
ΔrH° | 381.8 ± 2.3 | kcal/mol | D-EA | Robinson, Polak, et al., 1995 | gas phase |
ΔrH° | 381.1 ± 2.1 | kcal/mol | G+TS | Robinson, Polak, et al., 1995 | gas phase; Relative to MeOH at 375.0. isomerization accounted for in kinetic scheme |
ΔrH° | 381.0 ± 2.1 | kcal/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 372.6 ± 2.0 | kcal/mol | IMRE | Gal, Decouzon, et al., 2001 | gas phase |
ΔrG° | 373.4 ± 2.0 | kcal/mol | IMRE | Robinson, Polak, et al., 1995 | gas phase; Relative to MeOH at 375.0. isomerization accounted for in kinetic scheme |
ΔrG° | 373.3 ± 2.0 | kcal/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
Vibrational and/or electronic energy levels
Go To: Top, Reaction thermochemistry 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 = 22063 ± 8 | gas | Robinson, Polak, et al., 1995 | |||||
Zhou, Garand, et al., 2007 | |||||||
State: X
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
e | 8 | C3 deform. | 295 ± 10 | gas | TPE | Zhou, Garand, et al., 2007 | |
Additional references: Jacox, 1998, page 312
Notes
d | Photodissociation threshold |
References
Go To: Top, Reaction thermochemistry 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.
Gal, Decouzon, et al., 2001
Gal, J.F.; Decouzon, M.; Maria, P.C.; Gonzalez, A.I.; Mo, O.; Yanez, M.; El Chaouch, S.; Guillemin, J.C.,
Acidity trends in alpha,beta-unsaturated alkanes, silanes, germanes, and stannanes,
J. Am. Chem. Soc., 2001, 123, 26, 6353-6359, https://doi.org/10.1021/ja004079j
. [all data]
Robinson, Polak, et al., 1995
Robinson, M.S.; Polak, M.L.; Bierbaum, V.M.; DePuy, C.H.; Lineberger, W.C.,
Experimental Studies of Allene, Methylacetylene, and the Propargyl Radical: Bond Dissociation Energies, Gas-Phase Acidities, and Ion-Molecule Chemistry,
J. Am. Chem. Soc., 1995, 117, 25, 6766, https://doi.org/10.1021/ja00130a017
. [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]
Zhou, Garand, et al., 2007
Zhou, J.; Garand, E.; Eisfeld, W.; Neumark, D.M.,
Slow electron velocity-map imaging spectroscopy of the 1-propynyl radical,
J. Chem. Phys., 2007, 127, 3, 034304, https://doi.org/10.1063/1.2748399
. [all data]
Jacox, 1998
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement A,
J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017
. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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