ethyl hydroperoxide
- Formula: C2H6O2
- Molecular weight: 62.0678
- IUPAC Standard InChIKey: ILHIHKRJJMKBEE-UHFFFAOYSA-N
- CAS Registry Number: 3031-74-1
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, NIST Free Links, 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 | -50. | kcal/mol | Ccb | Stathis and Egerton, 1940 | ALS |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
19.75 | 298.15 | Lay T.H., 1996 | Selected values were obtained by ab initio calculation.; GT |
19.79 | 300. | ||
23.929 | 400. | ||
27.689 | 500. | ||
30.880 | 600. | ||
35.880 | 800. | ||
39.541 | 1000. | ||
45.141 | 1500. |
Condensed phase 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔcH°liquid | -335.17 ± 0.20 | kcal/mol | Ccb | Stathis and Egerton, 1940 | Corresponding ΔfHºliquid = -57.88 kcal/mol (simple calculation by NIST; no Washburn corrections) |
Phase change 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:
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
15.3 | 268. | A | Stephenson and Malanowski, 1987 | Based on data from 253. to 363. K. See also Egerton, Emte, et al., 1951 and Dykyj, 1970.; AC |
10.190 | 253. | V | Egerton, Emte, et al., 1951 | ALS |
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: John E. Bartmess
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
C2H5O2- + =
By formula: C2H5O2- + H+ = C2H6O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 370.9 ± 2.1 | kcal/mol | G+TS | Blanksby, Ramond, et al., 2001 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 363.9 ± 2.0 | kcal/mol | IMRE | Blanksby, Ramond, et al., 2001 | gas phase |
Henry's Law 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: Rolf Sander
Henry's Law constant (water solution)
kH(T) = k°H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
k°H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)
k°H (mol/(kg*bar)) | d(ln(kH))/d(1/T) (K) | Method | Reference |
---|---|---|---|
340. | 6000. | M | N/A |
Gas phase ion energetics 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
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
View reactions leading to C2H6O2+ (ion structure unspecified)
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
CH3O2+ | 11.4 | CH3 | EI | Holmes, Mommers, et al., 1985 | LBLHLM |
De-protonation reactions
C2H5O2- + =
By formula: C2H5O2- + H+ = C2H6O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 370.9 ± 2.1 | kcal/mol | G+TS | Blanksby, Ramond, et al., 2001 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 363.9 ± 2.0 | kcal/mol | IMRE | Blanksby, Ramond, et al., 2001 | gas phase; B |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Stathis and Egerton, 1940
Stathis, E.C.; Egerton, A.C.,
Note on heats of formation of ethyl and propyl peroxides,
Trans. Faraday Soc., 1940, 36, 606. [all data]
Lay T.H., 1996
Lay T.H.,
Ab initio study of alpha-chlorinated ethyl hydroperoxides CH3CH2OOH, CH3CHClOOH, and CH3CCl2OOH: conformational analysis, internal rotation barriers, vibrational frequencies, and thermodynamic properties,
J. Phys. Chem., 1996, 100, 8240-8249. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Egerton, Emte, et al., 1951
Egerton, A.C.; Emte, W.; Minkoff, G.J.,
Some properties of organic peroxides,
Faraday Discuss. Chem. Soc., 1951, 10, 278. [all data]
Dykyj, 1970
Dykyj, J.,
Petrochemica, 1970, 10, 2, 51. [all data]
Blanksby, Ramond, et al., 2001
Blanksby, S.J.; Ramond, T.M.; Davico, G.E.; Nimlos, M.R.; Kato, S.; Bierbaum, V.M.; Lineberger, W.C.; Ellison,
Negative-ion photoelectron spectroscopy, gas-phase acidity, and thermochemistry of the peroxyl radicals CH3OO and CH3CH2OO,
J. Am. Chem. Soc., 2001, 123, 39, 9585-9596, https://doi.org/10.1021/ja010942j
. [all data]
Holmes, Mommers, et al., 1985
Holmes, J.; Mommers, A.; DeKoster, C.; Heerma, W.; Terlouw, J.,
Four isomeric [C,H3,O2] ions,
Chem. Phys. Lett., 1985, 115, 437. [all data]
Notes
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- Symbols used in this document:
AE Appearance energy Cp,gas Constant pressure heat capacity of gas d(ln(kH))/d(1/T) Temperature dependence parameter for Henry's Law constant k°H Henry's Law constant at 298.15K ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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