Benzo[c]cinnoline
- Formula: C12H8N2
- Molecular weight: 180.2053
- IUPAC Standard InChIKey: SWJXWSAKHXBQSY-UHFFFAOYSA-N
- CAS Registry Number: 230-17-1
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: 9,10-Diazaphenanthrene; Diphenylenazone; Phenazone; Phenazone (three-ring system); 2,2'-Azobiphenyl; 3,4-Benzocinnoline; 5,6-Phenanthroline; o-Diphenyleneazine; 5,6-Diazaphenanthrene; NSC 86935
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Gas phase thermochemistry data
Go To: Top, Gas phase ion energetics 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 |
---|---|---|---|---|---|
ΔfH°gas | 89.9 ± 1.2 | kcal/mol | Ccb | Hussein and Akasheh, 1985 | ALS |
ΔfH°gas | 93.62 | kcal/mol | N/A | Schulze, Petrick, et al., 1977 | Value computed using ΔfHsolid° value of 295.1 kj/mol from Schulze, Petrick, et al., 1977 and ΔsubH° value of 96.6 kj/mol from Hussein and Akasheh, 1985.; DRB |
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
B - John E. Bartmess
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
0.92 ± 0.10 | IMRE | Dillow and Kebarle, 1989 | ΔGea(423 K) = -20.6 kcal/mol; ΔSea =-1.5, taken as that of anthracene, from Kebarle and Chowdhury, 1987.1,2-diazaphenanthrene.; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.9 | PE | Hush, Cheung, et al., 1975 | LLK |
~8.69 ± 0.02 | PE | Hush, Cheung, et al., 1975 | Vertical value; LLK |
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.
Spectrum
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Additional Data
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Source | Badger and Pettit, 1951 |
---|---|
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. 9941 |
Instrument | Beckman DU |
Melting point | 157-159 |
References
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics 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.
Hussein and Akasheh, 1985
Hussein, A.; Akasheh, T.S.,
Heat of combustion of heterocyclic compounds. Part II.,
Dirasat - Univ. Jordan, 1985, 12, 65-72. [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]
Dillow and Kebarle, 1989
Dillow, G.W.; Kebarle, P.,
Electron Affinities of aza-substituted polycyclic aromatic hydrocarbons,
Can. J. Chem., 1989, 67, 10, 1628, https://doi.org/10.1139/v89-249
. [all data]
Kebarle and Chowdhury, 1987
Kebarle, P.; Chowdhury, S.,
Electron affinities and electron transfer reactions,
Chem. Rev., 1987, 87, 513. [all data]
Hush, Cheung, et al., 1975
Hush, N.S.; Cheung, A.S.; Hilton, P.R.,
Binding energies of π- and "lone pair"-levels in mono- and diaza-phenanthrenes and anthracenes: an He(I) photoelectron spectroscopic study,
J. Electron Spectrosc. Relat. Phenom., 1975, 7, 385. [all data]
Badger and Pettit, 1951
Badger, G.M.; Pettit, R.,
J. Chem. Soc., 1951, 3199. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, UV/Visible spectrum, References
- Symbols used in this document:
EA Electron affinity ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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