Methane, nitro-
- Formula: CH3NO2
- Molecular weight: 61.0400
- IUPAC Standard InChIKey: LYGJENNIWJXYER-UHFFFAOYSA-N
- CAS Registry Number: 75-52-5
- 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: Nitromethane; Nitrocarbol; CH3NO2; Nitrometan; UN 1261; NM; NSC 428
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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
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
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
CH2NO2- + =
By formula: CH2NO2- + H+ = CH3NO2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1498. ± 21. | kJ/mol | D-EA | Metz, Cyr, et al., 1991 | gas phase; B |
ΔrH° | 1491. ± 9.2 | kJ/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
ΔrH° | 1495. ± 12. | kJ/mol | G+TS | Cumming and Kebarle, 1978 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1463. ± 8.4 | kJ/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
ΔrG° | 1467. ± 8.4 | kJ/mol | IMRE | Cumming and Kebarle, 1978 | gas phase; B |
ΔrG° | 1467. ± 8.4 | kJ/mol | IMRE | MacKay and Bohme, 1978 | gas phase; EA: < NO2; B |
By formula: Cl- + CH3NO2 = (Cl- • CH3NO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 65.3 ± 2.5 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
ΔrH° | 69.87 ± 0.42 | kJ/mol | TDAs | Sieck, 1985 | gas phase; B,M |
ΔrH° | 68. ± 13. | kJ/mol | IMRB | Riveros, Breda, et al., 1973 | gas phase; Anchored: Larson and McMahon, 1984; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71.5 | J/mol*K | PHPMS | Sieck, 1985 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 38.5 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
ΔrG° | 48.53 ± 0.42 | kJ/mol | TDAs | Sieck, 1985 | gas phase; B |
By formula: (Cl- • CH3NO2) + CH3NO2 = (Cl- • 2CH3NO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 54.4 ± 2.1 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
ΔrH° | 54.81 ± 0.42 | kJ/mol | TDAs | Sieck, 1985 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 76.6 | J/mol*K | PHPMS | Sieck, 1985 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 23.8 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
ΔrG° | 31.8 ± 1.3 | kJ/mol | TDAs | Sieck, 1985 | gas phase; B |
By formula: NO2- + CH3NO2 = (NO2- • CH3NO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 60.7 ± 2.1 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
ΔrH° | 59.83 ± 0.42 | kJ/mol | TDAs | Sieck, 1985 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 64.9 | J/mol*K | PHPMS | Sieck, 1985 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 32.6 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
ΔrG° | 40.6 ± 0.84 | kJ/mol | TDAs | Sieck, 1985 | gas phase; B |
By formula: C6H7N+ + CH3NO2 = (C6H7N+ • CH3NO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 60.2 | kJ/mol | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 75. | J/mol*K | N/A | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
34. | 343. | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
(CH3NO2- • ) + = (CH3NO2- • 2)
By formula: (CH3NO2- • CH3NO2) + CH3NO2 = (CH3NO2- • 2CH3NO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 50. ± 150. | kJ/mol | N/A | Compton, Carman Jr., et al., 1996 | gas phase; shift in electron detachment from less solvated ion; B |
ΔrH° | 53.6 ± 1.3 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 24.7 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
By formula: CH6N+ + CH3NO2 = (CH6N+ • CH3NO2)
Bond type: Hydrogen bonds of the type NH+-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 85.8 | kJ/mol | PHPMS | Meot-Ner, 1984 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 96.2 | J/mol*K | PHPMS | Meot-Ner, 1984 | gas phase; M |
By formula: CH2NO2- + CH3NO2 = C2H5N2O4-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 66.5 ± 2.1 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 35.1 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
C3H9N3O6- + 3 = C4H12N4O8-
By formula: C3H9N3O6- + 3CH3NO2 = C4H12N4O8-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.5 ± 2.1 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 15.9 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
By formula: C2H5N2O4- + 2CH3NO2 = C3H8N3O6-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 55.6 ± 2.9 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 24.3 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
C3H8N3O6- + 3 = C4H11N4O8-
By formula: C3H8N3O6- + 3CH3NO2 = C4H11N4O8-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 52.7 ± 2.1 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 13.0 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
C4H11N4O8- + 4 = C5H14N5O10-
By formula: C4H11N4O8- + 4CH3NO2 = C5H14N5O10-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 47.70 ± 0.84 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 6.69 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
By formula: C2H6N2O6- + 2CH3NO2 = C3H9N3O8-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 45.6 ± 2.5 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 15.5 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
C4H12N4O8- + 4 = C5H15N5O10-
By formula: C4H12N4O8- + 4CH3NO2 = C5H15N5O10-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 35.1 ± 0.84 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 10.0 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
C3H9N3O8- + 3 = C4H12N4O10-
By formula: C3H9N3O8- + 3CH3NO2 = C4H12N4O10-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 39.7 ± 3.8 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 9.62 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
By formula: CH3N2O4- + 2CH3NO2 = C2H6N3O6-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 51.9 ± 2.1 | kJ/mol | N/A | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 22.6 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
C2H6ClN2O4- + 3 = C3H9ClN3O6-
By formula: C2H6ClN2O4- + 3CH3NO2 = C3H9ClN3O6-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 46.4 ± 2.1 | kJ/mol | N/A | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 15.5 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
By formula: C11H10+ + CH3NO2 = (C11H10+ • CH3NO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 46.9 | kJ/mol | PHPMS | El-Shall and Meot-Ner (Mautner), 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 93.3 | J/mol*K | PHPMS | El-Shall and Meot-Ner (Mautner), 1987 | gas phase; M |
By formula: C2H6N3O6- + 3CH3NO2 = C3H9N4O8-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 47.3 ± 3.3 | kJ/mol | N/A | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 13.8 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
C3H9N4O8- + 4 = C4H12N5O10-
By formula: C3H9N4O8- + 4CH3NO2 = C4H12N5O10-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 40.6 ± 1.3 | kJ/mol | N/A | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 6.69 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
By formula: C5H10NO2+ + CH3NO2 = (C5H10NO2+ • CH3NO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 73.2 | kJ/mol | HPMS | Meot-Ner and Field, 1974 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 90.4 | J/mol*K | HPMS | Meot-Ner and Field, 1974 | gas phase; M |
By formula: C5H12NO2+ + CH3NO2 = (C5H12NO2+ • CH3NO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 82.8 | kJ/mol | HPMS | Meot-Ner and Field, 1974 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 116. | J/mol*K | HPMS | Meot-Ner and Field, 1974 | gas phase; M |
C3H9ClN3O6- + 4 = C4H12ClN4O8-
By formula: C3H9ClN3O6- + 4CH3NO2 = C4H12ClN4O8-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 40. ± 4.2 | kJ/mol | N/A | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 11.3 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
C4H12N4O10- + 4 = C5H15N5O12-
By formula: C4H12N4O10- + 4CH3NO2 = C5H15N5O12-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 25.1 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 2.5 | kJ/mol | TDAs | Wincel, 2003 | gas phase; B |
By formula: Li+ + CH3NO2 = (Li+ • CH3NO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 165. | kJ/mol | ICR | Staley and Beauchamp, 1975 | gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970; M |
By formula: CH3NO2- + CH3NO2 = (CH3NO2- • CH3NO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 63.60 ± 0.84 | kJ/mol | N/A | Compton, Carman Jr., et al., 1996 | gas phase; Shift in electron detachment from non-solvated ion; B |
+ = CH3BrNO2-
By formula: Br- + CH3NO2 = CH3BrNO2-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrG° | 40. ± 8.4 | kJ/mol | IMRE | Tanabe, Morgon, et al., 1996 | gas phase; Anchored to H2O..Br- of Hiraoka, Mizure, et al., 19882; B |
By formula: I- + CH3NO2 = (I- • CH3NO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 51.0 ± 4.2 | kJ/mol | TDAs | Caldwell, Masucci, et al., 1989 | gas phase; B,M |
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.
Metz, Cyr, et al., 1991
Metz, R.B.; Cyr, D.R.; Neumark, D.M.,
Study of the 2B1 and 2A2 States of CH2NO2 via Ultraviolet Photoelectron Spectroscopy of the CH2NO2- Anion,
J. Phys. Chem., 1991, 95, 7, 2900, https://doi.org/10.1021/j100160a047
. [all data]
Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr.,
The gas phase acidity scale from methanol to phenol,
J. Am. Chem. Soc., 1979, 101, 6047. [all data]
Cumming and Kebarle, 1978
Cumming, J.B.; Kebarle, P.,
Summary of gas phase measurements involving acids AH. Entropy changes in proton transfer reactions involving negative ions. Bond dissociation energies D(A-H) and electron affinities EA(A),
Can. J. Chem., 1978, 56, 1. [all data]
MacKay and Bohme, 1978
MacKay, G.I.; Bohme, D.K.,
Proton-Transfer Reactions in Nitromethane at 297K,
Int. J. Mass Spectrom. Ion Phys., 1978, 26, 4, 327, https://doi.org/10.1016/0020-7381(78)80052-7
. [all data]
Wincel, 2003
Wincel, H.,
Gas-phase Solvation of Cl-, NO2-, CH2NO2-, CH3NO2-, and CH3NO4- by CH3NO2,
Int. J. Mass Spectrom., 2003, 226, 3, 341-353, https://doi.org/10.1016/S1387-3806(03)00066-6
. [all data]
Sieck, 1985
Sieck, L.W.,
Thermochemistry of Solvation of NO2- and C6H5NO2- by Polar Molecules in the Vapor Phase. Comparison with Cl- and Variation with Ligand Structure.,
J. Phys. Chem., 1985, 89, 25, 5552, https://doi.org/10.1021/j100271a049
. [all data]
Riveros, Breda, et al., 1973
Riveros, J.M.; Breda, A.C.; Blair, L.K.,
Formation and relative stability of chloride ion clusters in the gas phase by ICR spectroscopy,
J. Am. Chem. Soc., 1973, 95, 4066. [all data]
Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B.,
Fluoride and chloride affinities of main group oxides, fluorides, oxofluorides, and alkyls. Quantitative scales of lewis acidities from ion cyclotron resonance halide-exchange equilibria,
J. Phys. Chem., 1984, 88, 1083. [all data]
Meot-Ner (Mautner) and El-Shall, 1986
Meot-Ner (Mautner), M.; El-Shall, M.S.,
Ionic Charge Transfer Complexes. 1. Cationic Complexes with Delocalized and Partially Localized pi Systems,
J. Am. Chem. Soc., 1986, 108, 15, 4386, https://doi.org/10.1021/ja00275a026
. [all data]
Compton, Carman Jr., et al., 1996
Compton, R.N.; Carman Jr.; Desfrancois, C.; Abdoul-Carmine, H.; Schermann, J.P.; Hendricks, J.H.,
On the binding of Electrons to Nitromethane: Dipole and Valence Bound Anions,
J. Chem. Phys., 1996, 105, 9, 3472, https://doi.org/10.1063/1.472993
. [all data]
Meot-Ner, 1984
Meot-Ner, (Mautner)M.,
The Ionic Hydrogen Bond and Ion Solvation. 1. -NH+ O-, -NH+ N- and -OH+ O- Bonds. Correlations with Proton Affinity. Deviations Due to Structural Effects,
J. Am. Chem. Soc., 1984, 106, 5, 1257, https://doi.org/10.1021/ja00317a015
. [all data]
El-Shall and Meot-Ner (Mautner), 1987
El-Shall, M.S.; Meot-Ner (Mautner), M.,
Ionic Charge Transfer Complexes. 3. Delocalised pi Systems as Electron Acceptors and Donors,
J. Phys. Chem., 1987, 91, 5, 1088, https://doi.org/10.1021/j100289a017
. [all data]
Meot-Ner and Field, 1974
Meot-Ner, (Mautner); Field, F.H.,
Solvation and Association of Protonated Gaseous Amino Acids,
J. Am. Chem. Soc., 1974, 96, 10, 3168, https://doi.org/10.1021/ja00817a024
. [all data]
Staley and Beauchamp, 1975
Staley, R.H.; Beauchamp, J.L.,
Intrinsic Acid - Base Properties of Molecules. Binding Energies of Li+ to pi - and n - Donor Bases,
J. Am. Chem. Soc., 1975, 97, 20, 5920, https://doi.org/10.1021/ja00853a050
. [all data]
Dzidic and Kebarle, 1970
Dzidic, I.; Kebarle, P.,
Hydration of the Alkali Ions in the Gas Phase. Enthalpies and Entropies of Reactions M+(H2O)n-1 + H2O = M+(H2O)n,
J. Phys. Chem., 1970, 74, 7, 1466, https://doi.org/10.1021/j100702a013
. [all data]
Tanabe, Morgon, et al., 1996
Tanabe, F.K.J.; Morgon, N.H.; Riveros, J.M.,
Relative Bromide and Iodide Affinity of Simple Solvent Molecules Determined by FT-ICR,
J. Phys. Chem., 1996, 100, 8, 2862-2866, https://doi.org/10.1021/jp952290p
. [all data]
Hiraoka, Mizure, et al., 1988
Hiraoka, K.; Mizure, S.; Yamabe, S.; Nakatsuji, Y.,
Gas Phase Clustering Reactions of CN- and CH2CN- with MeCN,
Chem. Phys. Lett., 1988, 148, 6, 497, https://doi.org/10.1016/0009-2614(88)80320-8
. [all data]
Caldwell, Masucci, et al., 1989
Caldwell, G.W.; Masucci, J.A.; Ikonomou, M.G.,
Negative Ion Chemical Ionization Mass Spectrometry - Binding of Molecules to Bromide and Iodide Anions,
Org. Mass Spectrom., 1989, 24, 1, 8, https://doi.org/10.1002/oms.1210240103
. [all data]
Notes
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
T Temperature ΔrG° Free energy of reaction at standard conditions 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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