CNN radical anion
- Formula: CN2-
- Molecular weight: 40.0246
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Gas phase thermochemistry data
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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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 101.3 ± 4.4 | kcal/mol | Acid | Clifford, Wenthold, et al., 1998 | between pyrazole, tBuSH |
| ΔfH°gas | <155.00 | kcal/mol | IMRB | Dawson, Noest, et al., 1979 | O- + CH2N2 or (CN)2 ->. |
Reaction thermochemistry data
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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
CN2- + = CHN2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 352.0 ± 4.3 | kcal/mol | G+TS | Clifford, Wenthold, et al., 1998 | gas phase; between pyrazole, tBuSH |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 344.3 ± 4.0 | kcal/mol | IMRB | Clifford, Wenthold, et al., 1998 | gas phase; between pyrazole, tBuSH |
Gas phase ion energetics data
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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
CN2- + = CHN2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 352.0 ± 4.3 | kcal/mol | G+TS | Clifford, Wenthold, et al., 1998 | gas phase; between pyrazole, tBuSH |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 344.3 ± 4.0 | kcal/mol | IMRB | Clifford, Wenthold, et al., 1998 | gas phase; between pyrazole, tBuSH |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Clifford, Wenthold, et al., 1998
Clifford, E.P.; Wenthold, P.G.; Lineberger, W.C.; Peterssom, G.A.; Broaddus, K.M.; Kass, S.R.; Kato, S.,
Properties of Diazocarbene [CNN] and the diazomethyl Radical [HCNN] via Ion Chemistry and Spectroscopy,
J. Phys. Chem. A, 1998, 102, 36, 7100, https://doi.org/10.1021/jp9802735
. [all data]
Dawson, Noest, et al., 1979
Dawson, J.H.J.; Noest, A.J.; Nibbering, N.M.M.,
The gas phase allyl anion,
Int. J. Mass Spectrom. Ion Phys., 1979, 29, 205. [all data]
Notes
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- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions 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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