Nitrogen dioxide
- Formula: NO2
- Molecular weight: 46.0055
- IUPAC Standard InChI: InChI=1S/NO2/c2-1-3
- IUPAC Standard InChIKey: JCXJVPUVTGWSNB-UHFFFAOYSA-N
- CAS Registry Number: 10102-44-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Nitrogen oxide; Nitrito; Nitro; Nitrogen peroxide; Azote; Rcra waste number P078; Stickstoffdioxid; Stikstofdioxyde; Nitrogen dioxide (NO2)
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Reaction thermochemistry 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 as indicated in comments:
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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
( • 4294967295
) +
=
By formula: (NO2- • 4294967295NO2) + NO2 = NO2-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 107.31 ± 0.30 | kcal/mol | N/A | Davidson, Fehsenfeld, et al., 1977 | gas phase; Relative to HBr, reevaluated with current HBr acidity. Excited state at 3.0 eV,81WU /TIE.; B |
| ΔrH° | <46.10 | kcal/mol | PDis | Smith, Lee, et al., 1979 | gas phase; Isomer: O4- + NO ->.; B |
| ΔrH° | 66.0 ± 5.0 | kcal/mol | PDis | Smith, Lee, et al., 1978 | gas phase; B |
0.76 + 0.62
+
=
+
By formula: 0.76NO2 + 0.62N2O4 + CH3NO3 = N2O5 + CH3NO2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 8.662 | kcal/mol | Cm | Ray and Ogg, 1959 | liquid phase; ALS |
+
= 2
+
By formula: CH3NO2 + HNO3 = 2NO2 + CH4O
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 15.89 | kcal/mol | Eqk | Silverwood and Thomas, 1967 | gas phase; ALS |
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, Fehsenfeld, et al., 1977
Davidson, J.A.; Fehsenfeld, F.C.; Howard, C.J.,
The heats of formation of NO3- and NO3- association complexes with HNO3 and HBr,
Int. J. Chem. Kinet., 1977, 9, 17. [all data]
Smith, Lee, et al., 1979
Smith, G.P.; Lee, L.C.; Moseley, J.T.,
Photodissociation and photodetachment of molecular negative ions. VIII. Nitrogen oxides and hydrates,3500-8250 Å,
J. Chem. Phys., 1979, 71, 4034. [all data]
Smith, Lee, et al., 1978
Smith, G.P.; Lee, L.C.; Cosby, P.C.; Peterson, J.R.; Moseley, J.T.,
Photodissociation and photodetachment of molecular negative ions. V. Atmospheric ions from 7000 to 8400 A),
J. Chem. Phys., 1978, 68, 3818. [all data]
Ray and Ogg, 1959
Ray, J.D.; Ogg, R.A., Jr.,
The heat of formation of methyl nitrate,
J. Phys. Chem., 1959, 63, 1522-1523. [all data]
Silverwood and Thomas, 1967
Silverwood, R.; Thomas, J.H.,
Reaction between methanol and nitrogen dioxide. Part 1.-Low-temperature reaction and the thermodynamic constants of methyl nitrite,
J. Chem. Soc. Faraday Trans., 1967, 63, 2476-2479. [all data]
Notes
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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