Diazene, diisopropyl

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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
Δfgas8.6kcal/molCcbEngel, Wood, et al., 1974see Engel, Melaugh, et al., 1976

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
Δfliquid-0.03 ± 0.19kcal/molCcbEngel, Wood, et al., 1974Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -0.06 kcal/mol; see Engel, Melaugh, et al., 1976
Quantity Value Units Method Reference Comment
Δcliquid-1042.48 ± 0.17kcal/molCcbEngel, Wood, et al., 1974see Engel, Melaugh, et al., 1976
Δcliquid-1053.10 ± 0.30kcal/molCcbCoates and Sutton, 1948Reanalyzed by Cox and Pilcher, 1970, Original value = -1053.4 ± 0.3 kcal/mol

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
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Δvap8.58 ± 0.1kcal/molCEngel, Melaugh, et al., 1976AC
Δvap8.66kcal/molVEngel, Wood, et al., 1974see Engel, Melaugh, et al., 1976; ALS
Δvap8.63kcal/molN/AEngel, Wood, et al., 1974DRB

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
8.63302.UVEngel, Wood, et al., 1974Based on data from 296. - 308. K.; AC
8.5 ± 0.5293.VCoates and Sutton, 1948ALS

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 by: Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C3H7+9.4 ± 0.1?EIGowenlock, Majer, et al., 1962 

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, Wood, et al., 1974
Engel, P.S.; Wood, J.L.; Sweet, J.A.; Margrave, J.L., Thermochemistry of azoalkanes, J. Am. Chem. Soc., 1974, 96, 2381-2387. [all data]

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]

Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P., Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]

Coates and Sutton, 1948
Coates, G.E.; Sutton, L.E., The heats of formation of the -N=N- and >C=N- bonds, J. Chem. Soc., 1948, 1187-1196. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Gowenlock, Majer, et al., 1962
Gowenlock, B.G.; Majer, J.R.; Snelling, D.R., Bond dissociation energies in some azo compounds, J. Chem. Soc. Faraday Trans., 1962, 58, 670. [all data]


Notes

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