Naphthalene

• Formula: C₁₀H₈
• Molecular weight: 128.1705
• IUPAC Standard InChI: InChI=1S/C10H8/c1-2-6-10-8-4-3-7-9(10)5-1/h1-8H Copy

  
• IUPAC Standard InChIKey: UFWIBTONFRDIAS-UHFFFAOYSA-N Copy
• CAS Registry Number: 91-20-3
• 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.
• Isotopologues:
  • Naphthalene-D8
• Other names: Albocarbon; Dezodorator; Moth flakes; Naphthalin; Naphthaline; Naphthene; Tar camphor; White tar; Camphor tar; Moth balls; Naftalen; NCI-C52904; Mighty 150; Mighty RD1; Rcra waste number U165; UN 1334; UN 2304; NSC 37565
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Condensed phase thermochemistry data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Phase change data
  • Henry's Law data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 5.0
  • NIST Polycyclic Aromatic Hydrocarbon Structure Index
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Condensed 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:
DH - Eugene S. Domalski and Elizabeth D. Hearing
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Constant pressure heat capacity of liquid

Constant pressure heat capacity of solid

Reaction thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Gas phase ion energetics 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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

C₁₀H₇^- +  =

By formula: C₁₀H₇^- + H⁺ = C₁₀H₈

C₆H₇N⁺ +  = (C₆H₇N⁺ • )

By formula: C₆H₇N⁺ + C₁₀H₈ = (C₆H₇N⁺ • C₁₀H₈)

Bond type: Charge transfer bond (positive ion)

Free energy of reaction

C₁₂H₈⁺ +  = (C₁₂H₈⁺ • )

By formula: C₁₂H₈⁺ + C₁₀H₈ = (C₁₂H₈⁺ • C₁₀H₈)

Bond type: Charge transfer bond (positive ion)

C₁₂H₉⁺ +  = (C₁₂H₉⁺ • )

By formula: C₁₂H₉⁺ + C₁₀H₈ = (C₁₂H₉⁺ • C₁₀H₈)

Bond type: Charge transfer bond (positive ion)

2 +  =

By formula: 2H₂ + C₁₀H₈ = C₁₀H₁₂

=

By formula: C₁₀H₈ = C₁₀H₈

C₁₀H₈⁺ +  = (C₁₀H₈⁺ • )

By formula: C₁₀H₈⁺ + C₁₀H₈ = (C₁₀H₈⁺ • C₁₀H₈)

Bond type: Charge transfer bond (positive ion)

C₁₀H₇^- +  =

By formula: C₁₀H₇^- + H⁺ = C₁₀H₈

H₄O₄^- +  + 2 = C₁₀H₁₂O₄^-

By formula: H₄O₄^- + C₁₀H₈ + 2H₂O = C₁₀H₁₂O₄^-

H₂O₃^- +  +  = C₁₀H₁₀O₃^-

By formula: H₂O₃^- + C₁₀H₈ + H₂O = C₁₀H₁₀O₃^-

C₁₀H₉⁺ +  = (C₁₀H₉⁺ • )

By formula: C₁₀H₉⁺ + C₁₀H₈ = (C₁₀H₉⁺ • C₁₀H₈)

 +  = C₁₀H₈O₂^-

By formula: O₂^- + C₁₀H₈ = C₁₀H₈O₂^-

 +  = C₁₀H₈NO^-

By formula: NO^- + C₁₀H₈ = C₁₀H₈NO^-

C₁₀H₈NO^- + 2 = C₂₀H₁₆NO^-

By formula: C₁₀H₈NO^- + 2C₁₀H₈ = C₂₀H₁₆NO^-

5 +  =

By formula: 5H₂ + C₁₀H₈ = C₁₀H₁₈

Gas phase ion energetics data

Go To: Top, Condensed phase thermochemistry data, Reaction 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
MM - Michael M. Meot-Ner (Mautner)
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to C₁₀H₈⁺ (ion structure unspecified)

Electron affinity determinations

Proton affinity at 298K

Gas basicity at 298K

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

C₁₀H₇^- +  =

By formula: C₁₀H₇^- + H⁺ = C₁₀H₈

C₁₀H₇^- +  =

By formula: C₁₀H₇^- + H⁺ = C₁₀H₈

References

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Notes

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

Chirico, Knipmeyer, et al., 1993
Chirico, R.D.; Knipmeyer, S.E.; Nguyen, A.; Steele, W.V., The thermodynamic properties to the temperature 700 K of naphthalene and of 2,7-dimethylnaphthalene, J. Chem. Thermodyn., 1993, 25, 1461-1494. [all data]

McCullough, Finke, et al., 1957
McCullough, J.P.; Finke, H.L.; Messerly, J.F.; Kincheloe, T.C.; Waddington, G., The low temperature thermodynamic properties of naphthalene, 1-methylnaphthalene, 2-methylnaphthalene, 1,2,3,4-tetrahydronaphthalene, trans-decahydronaphthalene and cis-decahydronaphthalene, J. Phys. Chem., 1957, 61, 1105-1116. [all data]

Southard and Brickwedde, 1933
Southard, J.C.; Brickwedde, F.G., Low temperature specific heats. I. An improved calorimeter for use from 14 to 300 K. The heat capacity and entropy of naphthalene. J. Am. Chem. Soc., 1933, 4378-4384. [all data]

Pearce and Tanner, 1934
Pearce, J.N.; Tanner, W.B., The heat capacity and the free energy of formation of naphthalene, Proc. Iowa Acad. Sci., 1934, 41, 123-126. [all data]

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Huffman, H.M.; Parks, G.S.; Daniels, A.C., Thermal data on organic compounds. VII. The heat capacities, entropies and free energies of twelve aromatic hydrocarbons, J. Am. Chem. Soc., 1930, 52, 1547-1558. [all data]

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David, D.J., Determination of specific heat and heat of fusion by differential thermal analysis. Study of theory and operating parameters, Anal. Chem., 1964, 36, 2162-2166. [all data]

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Hicks, 1938
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Reed and Kass, 2000
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Lardin, Squires, et al., 2001
Lardin, H.A.; Squires, R.R.; Wenthold, P.G., Determination of the electron affinities of alpha- and beta- naphthyl radicals using the kinetic method with full entropy analysis. The C-H bond dissociation energies of naphthalene, J. Mass Spectrom., 2001, 36, 6, 607-615, https://doi.org/10.1002/jms.159 . [all data]

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Frye, C.G.; Weitkamp, A.W., Equilibrium hydrogenations of multi-ring aromatics, J. Chem. Eng. Data, 1969, 14, 372-376. [all data]

Wilson, Caflisch, et al., 1958
Wilson, T.P.; Caflisch, E.G.; Hurley, G.F., The naphthalene-tetralin-hydrogen equilibrium at elevated temperature and pressure, J. Phys. Chem., 1958, 62, 1059. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Dreeskamp, Kapahnke, et al., 1988
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Grimme and Heinze, 1978
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Le Barbu, Schiedt, et al., 2002
Le Barbu, K.; Schiedt, J.; Weinkauf, R.; Schlag, E.W.; Nilles, J.M.; Xu, S.J.; Thomas, O.C.; Bowen, K.H., Microsolvation of small anions by aromatic molecules: An exploratory study, J. Chem. Phys., 2002, 116, 22, 9663-9671, https://doi.org/10.1063/1.1475750 . [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Lyapustina, Xu, et al., 2000
Lyapustina, S.A.; Xu, S.K.; Nilles, J.M.; Bowen, K.H., Solvent-induced stabilization of the naphthalene anion by water molecules: A negative cluster ion photoelectron spectroscopic study, J. Chem. Phys., 2000, 112, 15, 6643-6648, https://doi.org/10.1063/1.481237 . [all data]

Song, Han, et al., 2002
Song, J.K.; Han, S.Y.; Chu, I.H.; Kim, J.H.; Kim, S.K.; Lyapustina, S.A.; Xu, S.J.; Nilles, J.M.; Bowen, K.H., Photoelectron spectroscopy of naphthalene cluster anions, J. Chem. Phys., 2002, 116, 11, 4477-4481, https://doi.org/10.1063/1.1449869 . [all data]

Schiedt, Knott, et al., 2000
Schiedt, J.; Knott, W.J.; Le Barbu, K.; Schlag, E.W.; Weinkauf, R., Microsolvation of similar-sized aromatic molecules: Photoelectron spectroscopy of bithiophene-, azulene-, and naphthalene-water anion clusters, J. Chem. Phys., 2000, 113, 21, 9470-9478, https://doi.org/10.1063/1.1319874 . [all data]

Burrow, Michejda, et al., 1987
Burrow, P.D.; Michejda, J.A.; Jordan, K.D., Electron Transmission Study of the Temporary Negative Ion States of Selected Benzenoid and Conjugated Aromatic Hydrocarbons., J. Chem. Phys., 1987, 86, 1, 9, https://doi.org/10.1063/1.452598 . [all data]

Zlatkis, Lee, et al., 1983
Zlatkis, A.; Lee, C.K.; Wentworth, W.E.; Chen, E.C.M., Constant current linearization for determination of electron capture mechanisms, Anal. Chem., 1983, 55, 1596. [all data]

Heinis, Chowdhury, et al., 1993
Heinis, T.; Chowdhury, S.; Kebarle, P., Electron Affinities of Naphthalene, Anthracene and Substituted Naphthalenes and Anthracenes, Org. Mass Spectrom., 1993, 28, 4, 358, https://doi.org/10.1002/oms.1210280416 . [all data]

Wojnarovits and Foldiak, 1981
Wojnarovits, L.; Foldiak, G., Electron capture detection of aromatic hydrocarbons, J. Chromatogr. Sci., 1981, 206, 511. [all data]

Chen and Wentworth, 1989
Chen, E.C.M.; Wentworth, W.E., Experimental Determination of Electron Affinities of Organic Molecules, Mol. Cryst. Liq. Cryst., 1989, 171, 271. [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]

Aue, Guidoni, et al., 2000
Aue, D.H.; Guidoni, M.; Betowski, L.D., Ab initio calculated gas-phase basicities of polynuclear aromatic hydrocarbons, Int. J. Mass Spectrom., 2000, 201, 283. [all data]

Gotkis, Oleinikova, et al., 1993
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Cockett, Ozeki, et al., 1993
Cockett, M.C.R.; Ozeki, H.; Okuyama, K.; Kimura, K., Vibronic coupling in the ground cationic state of naphthalene: A laser threshold photoelectron [zero kinetic energy (ZEKE)-photoelectron] spectroscopic study, J. Chem. Phys., 1993, 98, 7763. [all data]

Jochims, Rasekh, et al., 1992
Jochims, H.-W.; Rasekh, H.; Ruhl, E.; Baumgartel, H.; Leach, S., The photofragmentation of naphthalene and azulene monocations in the energy range 7-22 eV, Chem. Phys., 1992, 168, 159. [all data]

Stahl and Maquin, 1984
Stahl, D.; Maquin, F., Charge-stripping mass spectrometry of molecular ions from polyacenes and molecular orbital theory, Chem. Phys. Lett., 1984, 108, 613. [all data]

Duncan, Dietz, et al., 1981
Duncan, M.A.; Dietz, T.G.; Smalley, R.E., Two-color photoionization of naphthalene and benzene at threshold, J. Chem. Phys., 1981, 75, 2118. [all data]

Mautner(Meot-Ner), 1980
Mautner(Meot-Ner), M., Ion thermochemistry of low volatility compounds in the gas phase. 3. Polycyclic aromatics: Ionization energies, proton, and hydrogen affinities. Extrapolations to graphite, J. Phys. Chem., 1980, 84, 2716. [all data]

Schafer, Schweig, et al., 1975
Schafer, W.; Schweig, A.; Vermeer, H.; Bickel-haupt, F.; De Graaf, H., On the nature of the "free electron pair" on phosphorus in aromatic phosphorus compounds: the photoelectron spectrum of 2-phosphanaphthalene, J. Electron Spectrosc. Relat. Phenom., 1975, 6, 91. [all data]

Schafer, Schweig, et al., 1973
Schafer, W.; Schweig, A.; Markl, G.; Heier, K.-H., Zur elektronenstruktur der lambda₃- und lambda₅-phosphanaphthaline--ungewohnlich grosse MO destabilisierungen, Tetrahedron Lett., 1973, 3743. [all data]

Pitt, 1973
Pitt, C.G., Hyperconjugation and its role in group IV chemistry, J. Organomet. Chem., 1973, 61, 49. [all data]

Clark, Brogli, et al., 1972
Clark, P.A.; Brogli, F.; Heilbronner, E., The π-orbital energies of the acenes, Helv. Chim. Acta, 1972, 55, 1415. [all data]

Brundle, Robin, et al., 1972
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Brogli, Heilbronner, et al., 1972
Brogli, F.; Heilbronner, E.; Kobayashi, T., Photoelectron spectra of azabenzenes and azanaphthalenes: II. A reinvestigation of azanaphthalenes by high-resolution photoelectron spectroscopy, Helv. Chim. Acta, 1972, 55, 274. [all data]

Johnstone, Mellon, et al., 1970
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Dewar, M.J.S.; Worley, S.D., Photoelectron spectra of molecules. I. Ionization potentials of some organic molecules and their interpretation, J. Chem. Phys., 1969, 50, 654. [all data]

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Yencha, A.J.; El-Sayed, M.A., Lowest ionization potentials of some nitrogen heterocyclics, J. Chem. Phys., 1968, 48, 3469. [all data]

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Kitagawa, T., Absorption spectra and photoionization of polycyclic aromatics in vacuum ultraviolet region, J. Mol. Spectry., 1968, 26, 1. [all data]

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Eland, J.H.D.; Danby, C.J., Inner ionization potentials of aromatic compounds, Z. Naturforsch., 1968, 23a, 355. [all data]

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Angus, J.G.; Christ, B.J.; Morris, G.C., Absorption spectra in the vacuum ultraviolet and the ionization potentials of naphthalene and naphthalene-d, molecules, Australian J. Chem., 1968, 21, 2153. [all data]

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Kaim, W.; Tesmann, H.; Bock, H., Me₃C-, Me₃Si-, Me₃Ge-, Me₃Sn- und Me₃Pb-substituierte benzol- und naphthalin-derivate und ihre radikalanionen, Chem. Ber., 1980, 113, 3221. [all data]

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

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Marschner, F.; Goetz, H., Korrelation zwischen photoelektronen- und elektronen-spektren. II. Untersuchung aromatischer π-systeme mit modifizierten PPP-SCF-CI-parametern, Tetrahedron, 1974, 30, 3159. [all data]

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Jochims, Rasekh, et al., 1993
Jochims, H.-W.; Rasekh, H.; Ruhl, E.; Baumgartel, H.; Leach, S., Deuterium isotope effects in the photofragmentation of naphthalene monocations, J. Phys. Chem., 1993, 97, 1312. [all data]

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VanBrunt, R.J.; Wacks, M.E., Electron-impact studies of aromatic hydrocarbons. III. Azulene and naphthalene, J. Chem. Phys., 1964, 41, 3195. [all data]

Notes

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, References

• Symbols used in this document:
  

  AE	Appearance energy
  Cp,liquid	Constant pressure heat capacity of liquid
  Cp,solid	Constant pressure heat capacity of solid
  EA	Electron affinity
  IE (evaluated)	Recommended ionization energy
  S°liquid	Entropy of liquid at standard conditions
  S°solid,1 bar	Entropy of solid at standard conditions (1 bar)
  T	Temperature
  ΔcH°solid	Enthalpy of combustion of solid at standard conditions
  ΔfH°solid	Enthalpy of formation of solid at standard conditions
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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