National Institute of Standards and Technology

NIST Chemistry WebBook, SRD 69

Benzonitrile, 2-nitro- anion

Formula: C₇H₄N₂O₂^-
Molecular weight: 148.1194
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Other data available:
- Gas phase thermochemistry data
- Ion clustering data
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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 as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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Individual Reactions

C₇H₄N₂O₂^- + = (C₇H₄N₂O₂^- • )

By formula: C₇H₄N₂O₂^- + C₄H₈O = (C₇H₄N₂O₂^- • C₄H₈O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	15. ± 6.7	kJ/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 35°C.; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
15.	308.	PHPMS	Chowdhury, 1987	gas phase; M

C₇H₄N₂O₂^- + = (C₇H₄N₂O₂^- • )

By formula: C₇H₄N₂O₂^- + CH₄O = (C₇H₄N₂O₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	19. ± 6.7	kJ/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
19.	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₇H₄N₂O₂^- + = (C₇H₄N₂O₂^- • )

By formula: C₇H₄N₂O₂^- + C₂H₆OS = (C₇H₄N₂O₂^- • C₂H₆OS)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	28. ± 6.7	kJ/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
28.	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₇H₄N₂O₂^- + = (C₇H₄N₂O₂^- • )

By formula: C₇H₄N₂O₂^- + C₃H₇NO = (C₇H₄N₂O₂^- • C₃H₇NO)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	20. ± 6.7	kJ/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
20.	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₇H₄N₂O₂^- + = (C₇H₄N₂O₂^- • )

By formula: C₇H₄N₂O₂^- + C₂H₃N = (C₇H₄N₂O₂^- • C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	22. ± 6.7	kJ/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
22.	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₇H₄N₂O₂^- + = C₇H₄F₄N₂O₂Si^-

By formula: C₇H₄N₂O₂^- + F₄Si = C₇H₄F₄N₂O₂Si^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	38.5 ± 2.5	kJ/mol	IMRE	Williamson, Knighton, et al., 2001	gas phase; at 150 C; B

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.

Chowdhury, Grimsrud, et al., 1987
Chowdhury, S.; Grimsrud, E.P.; Kebarle, P., Bonding of Charged Delocalized Anions to Protic and Dipolar Aprotic Solvent Molecules, J. Phys. Chem., 1987, 91, 10, 2551, https://doi.org/10.1021/j100294a021 . [all data]

Chowdhury, 1987
Chowdhury, S. Grimsrud, Bonding of Charge Delocalized Anions to Protic and Dipolar Aprotic Solvents, J. Phys. Chem., 1987, 91, 10, 2551, https://doi.org/10.1021/j100294a021 . [all data]

Williamson, Knighton, et al., 2001
Williamson, D.H.; Knighton, W.B.; Grimsrud, E.P., Lewis acid-base interactions of SiF4 with molecular anions formed by electron capture reactions, Int. J. Mass Spectrom., 2001, 206, 1-2, 53-61, https://doi.org/10.1016/S1387-3806(00)00388-2 . [all data]

Notes

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Symbols used in this document:

T Temperature

Δ_rG° Free energy of reaction at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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