Naphthalene, 1,8-dimethyl-

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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.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Δfgas108.8 ± 3.0kJ/molCcbMansson, 1974Author was aware that data differs from previously reported values; ALS
Δfgas108.6kJ/molN/AGood, 1973Value computed using ΔfHsolid° value of 25.9±1.2 kj/mol from Good, 1973 and ΔsubH° value of 82.7 kj/mol from Mansson, 1974.; DRB

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
40.650.Thermodynamics Research Center, 1997p=1 bar.; GT
69.8100.
98.9150.
128.6200.
173.8273.15
189.2298.15
190.3300.
247.9400.
296.2500.
335.5600.
367.4700.
393.9800.
416.1900.
434.91000.
451.1100.
464.1200.
476.1300.
486.1400.
495.1500.

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
7.5PEGuttenberger, Bestmann, et al., 1981LLK
8.30 ± 0.05EILoudon and Mazengo, 1974LLK
7.71PEGuttenberger, Bestmann, et al., 1981Vertical value; LLK
7.64 ± 0.03PEHeilbronner, Hoshi, et al., 1976Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C11H9+12.7 ± 0.2CH3EILoudon and Mazengo, 1974LLK
C12H11+13.0 ± 0.2HEILoudon and Mazengo, 1974LLK

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

Gas Phase Spectrum

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

Additional Data

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Owner NIST Standard Reference Data Program
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin NIST Mass Spectrometry Data Center
State gas
Instrument HP-GC/MS/IRD

This IR spectrum is from the NIST/EPA Gas-Phase Infrared Database .


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, Eugeny B. Stern, Antonina A. Goncharova, 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 Wolf, 1955
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. 3836
Instrument n.i.g.
Melting point 65
Boiling point 270

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.

Mansson, 1974
Mansson, M., A calorimetric study of peri strain in 1,8-Dimethylnaphthalene and 1,4,5,8-Tetramethylnaphthalene, Acta Chem. Scand., Ser. B, 1974, 28, 677-680. [all data]

Good, 1973
Good, W.D., The enthalpies of combustion and formation of 1,8-dimethylnaphthalene, 2,3-dimethylnaphthalene, 2,6-dimethylnaphthalene, and 2,7-dimethylnaphthalene, J. Chem. Thermodyn., 1973, 5, 715-720. [all data]

Thermodynamics Research Center, 1997
Thermodynamics Research Center, Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]

Guttenberger, Bestmann, et al., 1981
Guttenberger, H.G.; Bestmann, H.J.; Dickert, F.L.; Jorgensen, F.S.; Snyder, J.P., Sulfur-bridged peri-naphthalenes: Synthesis, conformational analysis, and photoelectron spectroscopy of the mono-, di-, and trisulfides of 1,8-diethylnaphthalene, J. Am. Chem. Soc., 1981, 103, 159. [all data]

Loudon and Mazengo, 1974
Loudon, A.G.; Mazengo, R.Z., Steric strain and electron-impact. The behaviour of some n, n'-dimethyl- 1,1-binaphthyls, some n, n'-dimethylbiphenyls and model compounds, Org. Mass Spectrom., 1974, 8, 179. [all data]

Heilbronner, Hoshi, et al., 1976
Heilbronner, E.; Hoshi, T.; von Rosenberg, J.L.; Hafner, K., Alkyl-induced, natural hypsochromic shifts of the 2A←2X and 2B←2X transitions of azulene and naphthalene radical cations, Nouv. J. Chim., 1976, 1, 105. [all data]

Wolf, 1955
Wolf, H.C., Fluoreszenz- und Absorptionsspektrum von 1,8-Dimethylnaphthalin, Z. Naturforsch. A:, 1955, 10, 800-801. [all data]


Notes

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