Carbon anion
- Formula: C2-
- Molecular weight: 24.0219
- IUPAC Standard InChI: InChI=1S/CH3/h1H3/q-1
- IUPAC Standard InChIKey: LGRLWUINFJPLSH-UHFFFAOYSA-N
- CAS Registry Number: 50802-47-6
- Chemical structure:
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics 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: 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
+
= C2H
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | >349.0 ± 3.6 | kcal/mol | D-EA | Arnold, Bradforth, et al., 1991 | gas phase |
| ΔrH° | <375.8 ± 2.3 | kcal/mol | G+TS | Schiff and Bohme, 1975 | gas phase; No reaction with acetylene |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | >341.7 ± 3.8 | kcal/mol | H-TS | Arnold, Bradforth, et al., 1991 | gas phase |
| ΔrG° | <368.5 ± 2.0 | kcal/mol | IMRB | Schiff and Bohme, 1975 | gas phase; No reaction with acetylene |
Gas phase ion energetics data
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: John E. Bartmess
Protonation reactions
+
= C2H
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | >349.0 ± 3.6 | kcal/mol | D-EA | Arnold, Bradforth, et al., 1991 | gas phase |
| ΔrH° | <375.8 ± 2.3 | kcal/mol | G+TS | Schiff and Bohme, 1975 | gas phase; No reaction with acetylene |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | >341.7 ± 3.8 | kcal/mol | H-TS | Arnold, Bradforth, et al., 1991 | gas phase |
| ΔrG° | <368.5 ± 2.0 | kcal/mol | IMRB | Schiff and Bohme, 1975 | gas phase; No reaction with acetylene |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Arnold, Bradforth, et al., 1991
Arnold, D.W.; Bradforth, S.E.; Kitsopoulos, T.N.; Neumark, D.M.,
Vibrationally Resolved Spectra of C2-C11 by Anion Photoelectron Spectroscopy,
J. Chem. Phys., 1991, 95, 12, 8753, https://doi.org/10.1063/1.461211
. [all data]
Schiff and Bohme, 1975
Schiff, H.I.; Bohme, D.K.,
Flowing afterglow studies at York University,
Int. J. Mass Spectrom. Ion Phys., 1975, 16, 167. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, 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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