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cis-Azobenzene

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Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, UV/Visible spectrum, 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
Deltafgas450.6 ± 2.1kJ/molCphaDias, Minas Da Piedade, et al., 1992Photoisomerization; ALS
Deltafgas460.1kJ/molN/ASchulze, Petrick, et al., 1977Value computed using «DELTA»fHsolid° value of 367.2±1.6 kj/mol from Schulze, Petrick, et al., 1977 and «DELTA»subH° value of 92.9 kj/mol from Dias, Minas Da Piedade, et al., 1992.; DRB
Deltafgas455.2kJ/molN/ACole and Gilbert, 1951Value computed using «DELTA»fHsolid° value of 362.3 kj/mol from Cole and Gilbert, 1951 and «DELTA»subH° value of 92.9 kj/mol from Dias, Minas Da Piedade, et al., 1992.; DRB
Deltafgas451.9kJ/molN/ACorruccini and Gilbert, 1939Value computed using «DELTA»fHsolid° value of 359.0±3.0 kj/mol from Corruccini and Gilbert, 1939 and «DELTA»subH° value of 92.9 kj/mol from Dias, Minas Da Piedade, et al., 1992.; DRB

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

Quantity Value Units Method Reference Comment
Deltafsolid357.7 ± 2.1kJ/molCphaDias, Minas Da Piedade, et al., 1992Photoisomerization; ALS
Deltafsolid367.2 ± 1.6kJ/molCcbSchulze, Petrick, et al., 1977ALS
Deltafsolid362.3kJ/molCcbCole and Gilbert, 1951ALS
Deltafsolid359. ± 3.kJ/molCcbCorruccini and Gilbert, 1939ALS
Quantity Value Units Method Reference Comment
Deltacsolid-6517.4 ± 1.6kJ/molCcbSchulze, Petrick, et al., 1977ALS
Deltacsolid-6513.7kJ/molCcbCole and Gilbert, 1951ALS
Deltacsolid-6508. ± 3.kJ/molCcbCorruccini and Gilbert, 1939ALS

Constant pressure heat capacity of solid

Cp,solid (J/mol*K) Temperature (K) Reference Comment
229.33300.Bouwstra, De Leeuw, et al., 1985T = 300 to 400 K.; DH
229.3300.Van Miltenburg and Bouwstra, 1984T = 90 to 320 K.; DH
219.298.15Schulze, Petrick, et al., 1977T = 298 to 333 K. Cp(c) = 219 + 1.029(T - 298.15 K) J/mol*K (298 to 333 K).; DH

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:
DRB - Donald R. Burgess, Jr.
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
Deltasub92.9kJ/molN/ADias, Minas Da Piedade, et al., 1992DRB
Deltasub92.92 ± 0.12kJ/molVCammenga, Behrens, et al., 1977ALS
Deltasub92.92 ± 0.12kJ/molVSchulze, Petrick, et al., 1977ALS
Deltasub92.92kJ/molCWolf and Cammenga, 1977ALS

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
92.9288.N/AStephenson and Malanowski, 1987Based on data from 273. - 323. K.; AC
92.9 ± 0.12328.MESchulte, Petrick, et al., 1977Based on data from 298. - 357. K.; AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
22.520341.03Van Miltenburg and Bouwstra, 1984DH
22.650341.8Schulze, Petrick, et al., 1977DH

Entropy of fusion

DeltafusS (J/mol*K) Temperature (K) Reference Comment
66.0341.03Van Miltenburg and Bouwstra, 1984DH

Enthalpy of phase transition

DeltaHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
22.530341.06crystaline, IliquidBouwstra, De Leeuw, et al., 1985DH

Entropy of phase transition

DeltaStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
66.06341.06crystaline, IliquidBouwstra, De Leeuw, et al., 1985DH

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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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

C12H10N2 = Azobenzene, (E)-

By formula: C12H10N2 = C12H10N2

Quantity Value Units Method Reference Comment
Deltar-45.2 ± 2.4kJ/molCphaDias, Minas Da Piedade, et al., 1992solid phase; Photoisomerization
Deltar-48.2 ± 0.3kJ/molCisoWolf and Cammenga, 1977solid phase
Deltar-47.3kJ/molCisoWolf and Cammenga, 1977gas phase; Gas phase

C12H10N2 = Azobenzene

By formula: C12H10N2 = C12H10N2

Quantity Value Units Method Reference Comment
Deltar-48.0 ± 1.5kJ/molCmCammenga, Behrens, et al., 1977solid phase

UV/Visible spectrum

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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: Victor Talrose, Alexander N. Yermakov, Alexy A. Usov, Antonina A. Goncharova, Axlexander N. Leskin, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina

Spectrum

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UVVis spectrum
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Additional Data

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Source Le Ferve and Northcott, 1952
Owner INEP CP RAS, NIST OSRD
Collection (C) 2007 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS
Source reference RAS UV No. 9971
Instrument Beckman DU
Melting point 71

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, UV/Visible spectrum, Notes

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

Dias, Minas Da Piedade, et al., 1992
Dias, A.R.; Minas Da Piedade, M.E.; Martinho Simoes, J.A.; Simoni, J.A.; Teixeira, C.; Diogo, H.P.; Meng-Yen, Y.; Pilcher, G., Enthalpies of formation of cis-azobenzene and trans-azobenzene, J. Chem. Thermodyn., 1992, 24, 439-447. [all data]

Schulze, Petrick, et al., 1977
Schulze, F.W.; Petrick, H.J.; Cammenga, H.K., Thermodynamic properties of structural analogues benzo[c]cinnoline, trans-azobenzene, and cis-azobenzene, Z. Phys. Chem. (Neue Folge), 1977, 107, 1-19. [all data]

Cole and Gilbert, 1951
Cole, L.G.; Gilbert, E.C., The heats of combustion of some nitrogen compounds and the apparent energy of the N-N bond, J. Am. Chem. Soc., 1951, 73, 5423-5427. [all data]

Corruccini and Gilbert, 1939
Corruccini, R.J.; Gilbert, E.C., The heat of combustion of cis- and trans-azobenzene, J. Am. Chem. Soc., 1939, 61, 2925-2927. [all data]

Bouwstra, De Leeuw, et al., 1985
Bouwstra, J.A.; De Leeuw, V.V.; Van Miltenburg, J.C., Properties of mixed-crystalline organic material prepared by zone levelling. IV. Melting properties and excess enthalpies of (trans-azobenzene + trans-stilbene), J. Chem. Thermodynam., 1985, 17, 685-695. [all data]

Van Miltenburg and Bouwstra, 1984
Van Miltenburg, J.C.; Bouwstra, J.A., Thermodynamic properties of trans-azobenzene and trans-stilbene, J. Chem. Thermodynam., 1984, 16, 61-65. [all data]

Cammenga, Behrens, et al., 1977
Cammenga, H.K.; Behrens, E.; Wolf, F., Thermal isomerization of cis-azobenzene in the solid state in React. Solids, [Proc. Int. Symp.],, ed. J. Wood, O. Lindqvist, C. Helgesson, Plenum: New York,NY, 1977, 481-486. [all data]

Wolf and Cammenga, 1977
Wolf, E.; Cammenga, H.K., Thermodynamic and kinetic investigation of the thermal isomerization of cis-azobenzene, Z. Phys. Chem. (Neue Folge), 1977, 107, 21-38. [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]

Schulte, Petrick, et al., 1977
Schulte, F.W.; Petrick, H.-J.; Cammenga, H.K.; Klinge, H., Z. Phys. Chem. (Frankfurt), 1977, 107, 1. [all data]

Le Ferve and Northcott, 1952
Le Ferve, R.J.W.; Northcott, J., J. Chem. Soc., 1952, 4082. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, UV/Visible spectrum, References