Dibenz[a,h]anthracene

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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 as indicated in comments:
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Δfgas78.4 ± 2.6kcal/molReviewRoux, Temprado, et al., 2008There are insufficient literature values to properly evaluate the data and insufficient information to construct thermochemical cycles or estimate values for comparison, and one must rely solely upon reported uncertainities and the quality of the measurements. In general, the evaluated uncertainty limits are on the order of (3 to 9) kJ/mol.; DRB

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
13.7050.Dorofeeva O.V., 1988Recommended values were calculated statistically mechanically using force field approximation for polycyclic aromatic hydrocarbons to estimate the needed vibrational frequencies (see also [ Dorofeeva O.V., 1986, Moiseeva N.F., 1989]). These functions are reproduced in the reference book [ Frenkel M., 1994].; GT
22.16100.
32.146150.
43.599200.
61.654273.15
67.85 ± 0.84298.15
68.301300.
91.467400.
110.78500.
126.23600.
138.55700.
148.50800.
156.66900.
163.431000.
169.101100.
173.881200.
177.941300.
181.411400.
184.401500.

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 evaluated as indicated in comments:
L - Sharon G. Lias

Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

Quantity Value Units Method Reference Comment
IE (evaluated)7.39 ± 0.01eVN/AN/AL

Electron affinity determinations

EA (eV) Method Reference Comment
0.5950 ± 0.0080ECDBecker and Chen, 1966B

Ionization energy determinations

IE (eV) Method Reference Comment
7.38 ± 0.02PESchmidt, 1977LLK
7.6 ± 0.1EIGallegos, 1968RDSH
7.57CTSKuroda, 1964RDSH
7.58CTSBriegleb, 1964RDSH
7.80CTSBirks and Stifkin, 1961RDSH
7.42CTSMatsen, 1956RDSH
7.38PEClar and Schmidt, 1976Vertical value; LLK
7.41PEClar and Schmidt, 1975Vertical value; LLK
7.38 ± 0.04PEBoschi, Clar, et al., 1974Vertical value; LLK

IR 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: Coblentz Society, Inc.

Condensed Phase Spectrum

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IR spectrum
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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.

Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

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Owner COBLENTZ SOCIETY
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin WYANDOTTE CHEMICALS CORP., WYANDOTTE, MICHIGAN, USA
Source reference COBLENTZ NO. 2870
Date Not specified, most likely prior to 1970
Name(s) dibenzo[a,h]anthracene
State SOLID (MINERAL OIL MULL)
Instrument Not specified, most likely a prism, grating, or hybrid spectrometer.
Path length
SPECTRAL CONTAMINATION DUE TO OIL AROUND 2900 CM-1
SPECTRAL FEATURE AT 661 CM-1 IS MOST LIKELY DUE TO AN UNKNOWN
Resolution 4
Sampling procedure TRANSMISSION
Data processing DIGITIZED BY NIST FROM HARD COPY
Melting point 265-267 C

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


Mass spectrum (electron ionization)

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass spectrum
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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Japan AIST/NIMC Database- Spectrum MS-NW- 121
NIST MS number 229816

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


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 Perkampus, 1967
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. 19836
Instrument Zeiss PMQ II
Melting point 262

References

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Notes

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

Roux, Temprado, et al., 2008
Roux, M.V.; Temprado, M.; Chickos, J.S.; Nagano, Y., Critically Evaluated Thermochemical Properties of Polycyclic Aromatic Hydrocarbons, J. Phys. Chem. Ref. Data, 2008, 37, 4, 1855-1996. [all data]

Dorofeeva O.V., 1988
Dorofeeva O.V., Thermodynamic Properties of Polycyclic Aromatic Hydrocarbons in the Gaseous Phase. Institute for High Temperatures, USSR Academy of Sciences, Preprint No.1-238 (in Russian), Moscow, 1988. [all data]

Dorofeeva O.V., 1986
Dorofeeva O.V., On calculation of thermodynamic properties of polycyclic aromatic hydrocarbons, Thermochim. Acta, 1986, 102, 59-66. [all data]

Moiseeva N.F., 1989
Moiseeva N.F., Development of Benson group additivity method for estimation of ideal gas thermodynamic properties of polycyclic aromatic hydrocarbons, Thermochim. Acta, 1989, 153, 77-85. [all data]

Frenkel M., 1994
Frenkel M., Thermodynamics of Organic Compounds in the Gas State, Vol. I, II, Thermodynamics Research Center, College Station, Texas, 1994, 1994. [all data]

Becker and Chen, 1966
Becker, R.S.; Chen, E., Extension of Electron Affinities and Ionization Potentials of Aromatic Hydrocarbons, J. Chem. Phys., 1966, 45, 7, 2403, https://doi.org/10.1063/1.1727954 . [all data]

Schmidt, 1977
Schmidt, W., Photoelectron spectra of polynuclear aromatics. V. Correlations with ultraviolet absorption spectra in the catacondensed series, J. Chem. Phys., 1977, 66, 828. [all data]

Gallegos, 1968
Gallegos, E.J., Mass spectrometry and ionization energies of some condensed-ring aromatic and heterocyclic compounds, J. Phys. Chem., 1968, 72, 3452. [all data]

Kuroda, 1964
Kuroda, H., Ionization potentials of polycyclic aromatic hydrocarbons, Nature, 1964, 201, 1214. [all data]

Briegleb, 1964
Briegleb, G., Electron affinity of organic molecules, Angew. Chem. Intern. Ed., 1964, 3, 617. [all data]

Birks and Stifkin, 1961
Birks, J.B.; Stifkin, M.A., π-Electronic excitation and ionization energies of condensed ring aromatic hydrocarbons, Nature, 1961, 191, 761. [all data]

Matsen, 1956
Matsen, F.A., Electron affinities, methyl affinities, and ionization energies of condensed ring aromatic hydrocarbons, J. Chem. Phys., 1956, 24, 602. [all data]

Clar and Schmidt, 1976
Clar, E.; Schmidt, W., Correlations between photoelectron and phosphorescence spectra of polycyclic hydrocarbons, Tetrahedron, 1976, 32, 2563. [all data]

Clar and Schmidt, 1975
Clar, E.; Schmidt, W., Correlations btween photoelectron and ultraviolet absorption spectra of polycyclic hydrocarbons and the number of aromatic sextets, Tetrahedron, 1975, 31, 2263. [all data]

Boschi, Clar, et al., 1974
Boschi, R.; Clar, E.; Schmidt, W., Photoelectron spectra of polynuclear aromatics. III. The effect of nonplanarity in sterically overcrowded aromatic hydrocarbons, J. Chem. Phys., 1974, 60, 4406. [all data]

Perkampus, 1967
Perkampus, H.-H., UV atlas of organic compounds, 1967, 3, E5/6. [all data]


Notes

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