4-Pyridinecarbonitrile, protonated
- Formula: C6H5N2+
- Molecular weight: 105.1168
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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: Michael M. Meot-Ner (Mautner) and Sharon G. Lias
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Individual Reactions
(C6H5N2+ • 2) +
= (C6H5N2+ • 3
)
By formula: (C6H5N2+ • 2H2O) + H2O = (C6H5N2+ • 3H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 37. | kJ/mol | PHPMS | Davidson, Sunner J., et al., 1979 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 84.5 | J/mol*K | PHPMS | Davidson, Sunner J., et al., 1979 | gas phase |
(C6H5N2+ • 3) +
= (C6H5N2+ • 4
)
By formula: (C6H5N2+ • 3H2O) + H2O = (C6H5N2+ • 4H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 34. | kJ/mol | PHPMS | Davidson, Sunner J., et al., 1979 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 82.4 | J/mol*K | PHPMS | Davidson, Sunner J., et al., 1979 | gas phase |
(C6H5N2+ • ) +
= (C6H5N2+ • 2
)
By formula: (C6H5N2+ • H2O) + H2O = (C6H5N2+ • 2H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 43.5 | kJ/mol | PHPMS | Davidson, Sunner J., et al., 1979 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 84.5 | J/mol*K | PHPMS | Davidson, Sunner J., et al., 1979 | gas phase |
C6H5N2+ + = (C6H5N2+ •
)
By formula: C6H5N2+ + H2O = (C6H5N2+ • H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 66.9 | kJ/mol | PHPMS | Davidson, Sunner J., et al., 1979 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 108. | J/mol*K | PHPMS | Davidson, Sunner J., et al., 1979 | gas phase |
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.
Davidson, Sunner J., et al., 1979
Davidson, W.R.; Sunner J.; Kebarle, P.,
Hydrogen Bonding of Water to Onium Ions. Hydration of Substituted Pyridinium Ions and Related Systems,
J. Am. Chem. Soc., 1979, 101, 7, 1675, https://doi.org/10.1021/ja00501a005
. [all data]
Notes
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
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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