Peroxide, dimethyl
- Formula: C2H6O2
- Molecular weight: 62.0678
- IUPAC Standard InChIKey: SRXOCFMDUSFFAK-UHFFFAOYSA-N
- CAS Registry Number: 690-02-8
- 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: Methyl peroxide; Dimethyl peroxide; (CH3O)2
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Gas phase thermochemistry data
Go To: Top, Gas phase ion energetics data, 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -126. | kJ/mol | Ccb | Baker, Littlefair, et al., 1965 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°gas | -1519. ± 1. | kJ/mol | Ccb | Baker, Littlefair, et al., 1965 | Corresponding ΔfHºgas = -126. kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
40.21 | 50. | Dorofeeva O.V., 1997 | p=1 bar.; GT |
49.95 | 100. | ||
58.36 | 150. | ||
65.48 | 200. | ||
81. ± 3. | 298.15 | ||
80.97 | 300. | ||
98.48 | 400. | ||
115.19 | 500. | ||
129.87 | 600. | ||
142.51 | 700. | ||
153.37 | 800. | ||
162.73 | 900. | ||
170.80 | 1000. | ||
177.75 | 1100. | ||
183.75 | 1200. | ||
188.94 | 1300. | ||
193.43 | 1400. | ||
197.33 | 1500. |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, 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:
MM - Michael M. Meot-Ner (Mautner)
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
View reactions leading to C2H6O2+ (ion structure unspecified)
Proton affinity at 298K
Proton affinity (kJ/mol) | Reference | Comment |
---|---|---|
674. | Bernardi, Cacace, et al., 1998 | PA at NO2+ binding site, estimated from correlation of PAs with NO2+ binding energies; MM |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.1 | PE | Kimura and Osafune, 1975 | LLK |
9.71 | PE | Kimura and Osafune, 1975 | Vertical value; LLK |
References
Go To: Top, Gas phase thermochemistry data, 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.
Baker, Littlefair, et al., 1965
Baker, G.; Littlefair, J.H.; Shaw, R.; Thynne, J.C.J.,
1286. The heats of formation of dimethyl, diethyl, and di-t-butyl peroxide,
J. Chem. Soc., 1965, 6970-6972. [all data]
Dorofeeva O.V., 1997
Dorofeeva O.V.,
Unpublished results. Thermocenter of Russian Academy of Science, Moscow, 1997. [all data]
Bernardi, Cacace, et al., 1998
Bernardi, F.; Cacace, F.; de Petris, G.; Pepi, F.; Rossi, I.,
Gaseous [N2O5]H+, [N2O4]H+, and related species from the addition of NO2+ and NO+ ions to nitric acid and its derivatives,
J. Phys. Chem. A, 1998, 102, 1987. [all data]
Kimura and Osafune, 1975
Kimura, K.; Osafune, K.,
Photoelectron spectroscopic study of skew compounds. III. N,N'-dimethylhydrazine, dimethyl peroxide, and dimethyl disulfide,
Bull. Chem. Soc. Jpn., 1975, 48, 2421. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas ΔcH°gas Enthalpy of combustion of gas at standard conditions ΔfH°gas Enthalpy of formation of gas 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.