pentadienide anion
- Formula: C5H7-
- Molecular weight: 67.1096
- Information on this page:
- Other data available:
- Options:
Gas phase ion energetics 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 by: John E. Bartmess
Electron affinity of neutral species
| EAneutral (eV) | Method | Reference | Comment |
|---|---|---|---|
| 0.910 ± 0.030 | PD | Zimmerman, Gygax, et al., 1978 | Acid: 1,4-pentadiene. (Z)-1,3-pentadiene is 7.0 kcal/mol more stable(weaker acid) |
Protonation reactions
C5H7- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1545. ± 5.0 | kJ/mol | D-EA | Zimmerman, Gygax, et al., 1978 | gas phase; Acid: 1,4-pentadiene. (Z)-1,3-pentadiene is 7.0 kcal/mol more stable(weaker acid) |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1525. ± 7.9 | kJ/mol | H-TS | Zimmerman, Gygax, et al., 1978 | gas phase; Acid: 1,4-pentadiene. (Z)-1,3-pentadiene is 7.0 kcal/mol more stable(weaker acid) |
References
Go To: Top, 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.
Zimmerman, Gygax, et al., 1978
Zimmerman, A.H.; Gygax, R.; Brauman, J.I.,
Electron photodetachment spectroscopy of polyene anions. Electron affinities of pentadienyl and heptatrienyl radicals,
J. Am. Chem. Soc., 1978, 100, 5595. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
EAneutral Electron affinity of neutral species 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
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.