tert-Butyl Hydroperoxide

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Gas phase thermochemistry data

Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), References, Notes

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
Δfgas-234.9kJ/molEqkKhursan and Martem'yanov, 1991hf from V. P.Komissarov's report
Δfgas-246. ± 5.0kJ/molCcbKozlov and Rabinovich, 1964 

Phase change data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), 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
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Δvap47.7 ± 0.2kJ/molVKozlov and Rabinovich, 1964ALS
Δvap48.0kJ/molN/AKozlov and Rabinovich, 1964DRB
Δvap48.1kJ/molVVaughan, 1951ALS

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
46.568153.VEgerton, Emte, et al., 1951ALS

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), References, Notes

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

C4H9O2- + Hydrogen cation = tert-Butyl Hydroperoxide

By formula: C4H9O2- + H+ = C4H10O2

Quantity Value Units Method Reference Comment
Δr1552. ± 8.8kJ/molG+TSClifford, Wenthold, et al., 1998gas phase
Quantity Value Units Method Reference Comment
Δr1520. ± 8.4kJ/molIMREClifford, Wenthold, et al., 1998gas phase

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), 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
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
LL - Sharon G. Lias and Joel F. Liebman

Ionization energy determinations

IE (eV) Method Reference Comment
10.24PEBatich and Adam, 1974Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
HO2+9.90C4H9EIHolmes, Lossing, et al., 1991LL

De-protonation reactions

C4H9O2- + Hydrogen cation = tert-Butyl Hydroperoxide

By formula: C4H9O2- + H+ = C4H10O2

Quantity Value Units Method Reference Comment
Δr1552. ± 8.8kJ/molG+TSClifford, Wenthold, et al., 1998gas phase; B
Quantity Value Units Method Reference Comment
Δr1520. ± 8.4kJ/molIMREClifford, Wenthold, et al., 1998gas phase; B

Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, 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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.

Mass spectrum
For Zoom
1.) Enter the desired X axis range (e.g., 100, 200)
2.) Check here for automatic Y scaling
3.) Press here to zoom

Additional Data

View image of digitized spectrum (can be printed in landscape orientation).

Due to licensing restrictions, this spectrum cannot be downloaded.

Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin NIST Mass Spectrometry Data Center
NIST MS number 341918

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Khursan and Martem'yanov, 1991
Khursan, S.L.; Martem'yanov, V.S., Thermochemistry of the recombination of peroxyl radicals, Russ. J. Phys. Chem. (Engl. Transl.), 1991, 65, 321-325. [all data]

Kozlov and Rabinovich, 1964
Kozlov, N.A.; Rabinovich, I.B., Thermodynamics of isopropylbenzene and tert-butyl hydroperoxides. I. Heat of combustion and the formation of hydroperoxides; [bond] energy of oxygen-oxygen bond, Tr. Khim. Khim. Tekhnol., 1964, 189-193. [all data]

Vaughan, 1951
Vaughan, W.E., General discussion (communicated), Discuss. Faraday Soc., 1951, 10, 330. [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]

Clifford, Wenthold, et al., 1998
Clifford, E.P.; Wenthold, P.G.; Gareyev, R.; Lineberger, W.C.; DePuy, C.H.; Bierbaum, V.M.; Ellison, G.B., Photoelectron spectroscopy, gas phase acidity, and thermochemistry of tert-butyl hydroperoxide: Mechanisms for the rearrangement of peroxyl radicals, J. Chem. Phys., 1998, 109, 23, 10293-10310, https://doi.org/10.1063/1.477725 . [all data]

Batich and Adam, 1974
Batich, C.; Adam, W., The photoelectron spectra of alkylperoxides, Tetrahedron Lett., 1974, 1467. [all data]

Holmes, Lossing, et al., 1991
Holmes, J.L.; Lossing, F.P.; Mayer, P.M., Heats of formation of oxygen-containing organic free radicals from appearance energy measurements, J. Am. Chem. Soc., 1991, 113, 9723. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), References