cis-Azobenzene
- Formula: C12H10N2
- Molecular weight: 182.2212
- CAS Registry Number: 1080-16-6
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Gas phase thermochemistry data
Go To: Top, Phase change 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
DRB - Donald R. Burgess, Jr.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 450.6 ± 2.1 | kJ/mol | Cpha | Dias, Minas Da Piedade, et al., 1992 | Photoisomerization; ALS |
| ΔfH°gas | 460.1 | kJ/mol | N/A | Schulze, Petrick, et al., 1977 | Value computed using ΔfHsolid° value of 367.2±1.6 kj/mol from Schulze, Petrick, et al., 1977 and ΔsubH° value of 92.9 kj/mol from Dias, Minas Da Piedade, et al., 1992.; DRB |
| ΔfH°gas | 455.2 | kJ/mol | N/A | Cole and Gilbert, 1951 | Value computed using ΔfHsolid° value of 362.3 kj/mol from Cole and Gilbert, 1951 and ΔsubH° value of 92.9 kj/mol from Dias, Minas Da Piedade, et al., 1992.; DRB |
| ΔfH°gas | 451.9 | kJ/mol | N/A | Corruccini and Gilbert, 1939 | Value computed using ΔfHsolid° value of 359.0±3.0 kj/mol from Corruccini and Gilbert, 1939 and ΔsubH° value of 92.9 kj/mol from Dias, Minas Da Piedade, et al., 1992.; DRB |
Phase change data
Go To: Top, Gas 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:
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 |
|---|---|---|---|---|---|
| ΔsubH° | 92.9 | kJ/mol | N/A | Dias, Minas Da Piedade, et al., 1992 | DRB |
| ΔsubH° | 92.92 ± 0.12 | kJ/mol | V | Cammenga, Behrens, et al., 1977 | ALS |
| ΔsubH° | 92.92 ± 0.12 | kJ/mol | V | Schulze, Petrick, et al., 1977 | ALS |
| ΔsubH° | 92.92 | kJ/mol | C | Wolf and Cammenga, 1977 | ALS |
Enthalpy of sublimation
| ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 92.9 | 288. | N/A | Stephenson and Malanowski, 1987 | Based on data from 273. to 323. K.; AC |
| 92.9 ± 0.12 | 328. | ME | Schulte, Petrick, et al., 1977 | Based on data from 298. to 357. K.; AC |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 22.520 | 341.03 | Van Miltenburg and Bouwstra, 1984 | DH |
| 22.650 | 341.8 | Schulze, Petrick, et al., 1977 | DH |
Entropy of fusion
| ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 66.0 | 341.03 | Van Miltenburg and Bouwstra, 1984 | DH |
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 22.530 | 341.06 | crystaline, I | liquid | Bouwstra, De Leeuw, et al., 1985 | DH |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 66.06 | 341.06 | crystaline, I | liquid | Bouwstra, De Leeuw, et al., 1985 | DH |
References
Go To: Top, Gas 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.
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]
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]
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]
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]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, References
- Symbols used in this document:
ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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