3,3,5,5-Tetramethyl-1-pyrazoline

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Gas 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
Δfgas39. ± 3.kJ/molCcbEngel, Melaugh, et al., 1976 

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfsolid-22.3 ± 3.5kJ/molCcbEngel, Melaugh, et al., 1976 
Quantity Value Units Method Reference Comment
Δcsolid-4733.0 ± 3.5kJ/molCcbEngel, Melaugh, et al., 1976 

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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Δsub61.6 ± 0.2kJ/molVEngel, Melaugh, et al., 1976ALS
Δsub61.3kJ/molN/AEngel, Melaugh, et al., 1976DRB
Δsub61.6 ± 0.2kJ/molN/AEngel, Melaugh, et al., 1976AC

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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

IE (eV) Method Reference Comment
8.63PEHouk, Chang, et al., 1975Vertical value; LLK

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change 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.

Engel, Melaugh, et al., 1976
Engel, P.S.; Melaugh, R.A.; Mansson, M.; Timberlake, J.W.; Garner, A.W.; Rossini, F.D., Thermochemistry of nine diazenes (azo compounds), J. Chem. Thermodyn., 1976, 8, 607-621. [all data]

Houk, Chang, et al., 1975
Houk, K.N.; Chang, Y.-M.; Engel, P.S., Photoelectron spectroscopy of azo compounds, J. Am. Chem. Soc., 1975, 97, 1824. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, References