3,9-Dimethylbenz[a]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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Δfgas45.1 ± 0.8kcal/molCcbKarnes, Kybett, et al., 1965Author was aware that data differs from previously reported values; ALS
Δfgas45.20kcal/molN/AFrisch, Barker, et al., 1963Value computed using ΔfHsolid° value of 76.1±2.8 kj/mol from Frisch, Barker, et al., 1963 and ΔsubH° value of 113.0 kj/mol from Karnes, Kybett, et al., 1965.; 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

Ionization energy determinations

IE (eV) Method Reference Comment
7.20 ± 0.03PEAkiyama, Harvey, et al., 1981LLK

References

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

Karnes, Kybett, et al., 1965
Karnes, H.A.; Kybett, B.D.; Wilson, M.H.; Margrave, J.L.; Newman, M.S., Strain energies in hydrocarbons from heats of combustion. III. 3,4,5,6- and 2,4,5,7-tetramethylphenanthrenes, J. Am. Chem. Soc., 1965, 87, 5554-5558. [all data]

Frisch, Barker, et al., 1963
Frisch, M.A.; Barker, C.; Margrave, J.L.; Newman, M.S., Strain energies in hydrocarbons from heats to combustion. I. 4,5-and 2,7-dimethylphenanthrenes, 1,12- and 5,8-benzo(c)phenanthrenes and 1',9- and 3',6-benzanthracenes, J. Am. Chem. Soc., 1963, 85, 2356-2357. [all data]

Akiyama, Harvey, et al., 1981
Akiyama, I.; Harvey, R.G.; LeBreton, P.R., Ultraviolet photoelectron studies of methyl-substituted benz[a]anthracenes, J. Am. Chem. Soc., 1981, 103, 6330. [all data]


Notes

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