Diazene, bis(4-ethoxyphenyl)-, 1-oxide

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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
Δfgas-37.4 ± 3.7kJ/molCcbAcree, Tucker, et al., 1993 

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 as indicated in comments:
DH - Eugene S. Domalski and Elizabeth D. Hearing
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfsolid-163.6 ± 2.6kJ/molCcbAcree, Tucker, et al., 1993ALS
Δfsolid-45.6kJ/molCcbLemoul, 1908ALS
Δfsolid-45.86kJ/molCcbLemoult, 1906Author value for hf298-condensed=21.1 kcal/mol; ALS
Quantity Value Units Method Reference Comment
Δcsolid-8705.0 ± 1.5kJ/molCcbAcree, Tucker, et al., 1993ALS
Δcsolid-8822.8kJ/molCcbLemoul, 1908ALS
Δcsolid-8822.8kJ/molCcbLemoult, 1906Author value for hf298-condensed=21.1 kcal/mol; ALS

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
607.430.Kreutzer, 1938Value a few degrees below anisotropic-isotropic liquid-liquid transition at 436 K.; DH

Phase change data

Go To: Top, Gas phase thermochemistry data, Condensed 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Δsub126.2 ± 2.7kJ/molCAcree, Tucker, et al., 1993ALS
Δsub126.2 ± 2.7kJ/molCAcree, 1993AC

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
27.000406.5Acree, Tucker, et al., 1993DH

Enthalpy of phase transition

ΔHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
1.700438.5liquidliquidAcree, Tucker, et al., 1993Nematic/liq.; DH

References

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

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

Acree, Tucker, et al., 1993
Acree, W.E., Jr.; Tucker, S.A.; Pilcher, G.; Paz Andrade, M.I.; Ribeiro da Silva, M.D.M.C., Enthalpies of combustion of p-azoxyanisole p-azoxyphenetole: the dissociation enthalpy of the N-O bonds. Enthalpies of crystal-to-(liquid crystal) transitions, J. Chem. Thermodyn., 1993, 25, 653-659. [all data]

Lemoul, 1908
Lemoul, M.P., Recherches theoriques et experimentals sur les chaleurs de combustion et de formation des couposes organiques, Anal. Chem., 1908, 184-190. [all data]

Lemoult, 1906
Lemoult, M.P., Thermochimie. - Chaleur de combustion et de formation de quelques composes cycliques azotes, Compt. Rend., 1906, 143, 772-775. [all data]

Kreutzer, 1938
Kreutzer, C., Kalorimetrische Messungen beim Übergang von der anisotropen zur isotropen flüssigen Phase, Ann. Physik. [5]33, 1938, 192-209. [all data]

Acree, 1993
Acree, W., Enthalpies of combustion of p-azoxyanisole and p-azoxyphenetole: the dissociation enthalpy of the N-O bonds. Enthalpies of crystal-to-(liquid crystal) transitions, The Journal of Chemical Thermodynamics, 1993, 25, 5, 653-659, https://doi.org/10.1006/jcht.1993.1062 . [all data]


Notes

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