Triphenylmethane

• Formula: C₁₉H₁₆
• Molecular weight: 244.3303
• IUPAC Standard InChI: InChI=1S/C19H16/c1-4-10-16(11-5-1)19(17-12-6-2-7-13-17)18-14-8-3-9-15-18/h1-15,19H Copy

  
• IUPAC Standard InChIKey: AAAQKTZKLRYKHR-UHFFFAOYSA-N Copy
• CAS Registry Number: 519-73-3
• 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.
• Other names: Benzene, 1,1',1''-methylidynetris-; Methane, triphenyl-; Tritane; Benzene,1,1',1"-methylidynetris-; 1,1',1''-Methylidynetris[benzene]
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• Information on this page:
  • Gas phase thermochemistry data
  • Phase change data
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • Gas Chromatography
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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

Phase change 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Reduced pressure boiling point

Enthalpy of vaporization

Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Enthalpy of sublimation

Enthalpy of fusion

Entropy of fusion

References

Go To: Top, Gas phase thermochemistry data, Phase change data, 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]

Marcus Y., 1986
Marcus Y., Entropies of tetrahedral M-phenyl species, J. Chem. Soc., Faraday Trans. 1, 1986, 82, 993-1006. [all data]

Dorofeeva O.V., 1997
Dorofeeva O.V., Unpublished results. Thermocenter of Russian Academy of Science, Moscow, 1997. [all data]

McGrath and Levine, 1955
McGrath, T.F.; Levine, R., The Reactions of Certain Fluorinated and Chlorinated Acetic Acids with Phenyllithium in Refluxing Ether, J. Am. Chem. Soc., 1955, 77, 3634. [all data]

Kurbatov, 1950
Kurbatov, V.Y., Specific heat of liquids. III. Specific heat of hydrocarbons with several noncondensed rings, Zh. Obshch. Khim., 1950, 20, 1139. [all data]

Lagerlof, 1918
Lagerlof, D., Thermodynamic research: reduced formulas for simplified calculations of latent molar heat of evaporation, J. Prakt. Chem., 1918, 98, 136. [all data]

Hanshaw, Nutt, et al., 2008
Hanshaw, William; Nutt, Marjorie; Chickos, James S., Hypothetical Thermodynamic Properties. Subcooled Vaporization Enthalpies and Vapor Pressures of Polyaromatic Hydrocarbons, J. Chem. Eng. Data, 2008, 53, 8, 1903-1913, https://doi.org/10.1021/je800300x . [all data]

Chickos, Hesse, et al., 1998
Chickos, James; Hesse, Donald; Hosseini, Sarah; Nichols, Gary; Webb, Paul, Sublimation enthalpies at 298.15K using correlation gas chromatography and differential scanning calorimetry measurements, Thermochimica Acta, 1998, 313, 2, 101-110, https://doi.org/10.1016/S0040-6031(97)00432-2 . [all data]

Chickos, Hosseini, et al., 1995
Chickos, James S.; Hosseini, Sarah; Hesse, Donald G., Determination of vaporization enthalpies of simple organic molecules by correlations of changes in gas chromatographic net retention times, Thermochimica Acta, 1995, 249, 41-62, https://doi.org/10.1016/0040-6031(95)90670-3 . [all data]

Verevkin, 1999
Verevkin, Sergey P., Thermochemical Properties of Triphenylalkanes and Tetraphenylmethane. Strain in Phenyl Substituted Alkanes, J. Chem. Eng. Data, 1999, 44, 3, 557-562, https://doi.org/10.1021/je9802726 . [all data]

Marcus and Loewenschuss, 1986
Marcus, Yizhak; Loewenschuss, Aharon, Entropies of tetrahedral M---phenyl species, J. Chem. Soc., Faraday Trans. 1, 1986, 82, 3, 993, https://doi.org/10.1039/f19868200993 . [all data]

Cuthbertson and Bent, 1936
Cuthbertson, G.R.; Bent, H.E., Single Bond Energies. IV. The Vapor Pressure of Hexaphenylethane, J. Am. Chem. Soc., 1936, 58, 10, 2000-2003, https://doi.org/10.1021/ja01301a052 . [all data]

Pepekin, Erlikh, et al., 1974
Pepekin, V.I.; Erlikh, R.D.; Matyushin, Yu.N.; Lebedev, Yu.A., Dissociation energy of the C - N₃ bond in triphenylazidomethane and benzyl and phenyl azides. Enghalpy of formation of triphenylmethyl radical, Dokl. Phys. Chem. (Engl. Transl.), 1974, 214, 123-125. [all data]

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Sasse, N'guimbi, et al., 1989
Sasse, K.; N'guimbi, J.; Jose, J.; Merlin, J.C., Tension de vapeur d'hydrocarbures polyaromatiques dans le domaine 10-3--10 Torr, Thermochimica Acta, 1989, 146, 53-61, https://doi.org/10.1016/0040-6031(89)87075-3 . [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Hansen and Eckert, 1986
Hansen, Philip C.; Eckert, Charles A., An improved transpiration method for the measurement of very low vapor pressures, J. Chem. Eng. Data, 1986, 31, 1, 1-3, https://doi.org/10.1021/je00043a001 . [all data]

Aihara, 1959
Aihara, A., Estimation of the energy of hydrogen bonds formed in crystals. I. Sublimation pressures of some organic molecular crystals and the additivity of lattice energy, Bull. Chem. Soc. Jpn., 1959, 32, 1242. [all data]

Aihara, 1959, 2
Aihara, Ariyuki, Estimation of the Energy of Hydrogen Bonds Formed in Crystals. I. Sublimation Pressures of Some Organic Molecular Crystals and the Additivity of Lattice Energy, Bull. Chem. Soc. Jpn., 1959, 32, 11, 1242-1248, https://doi.org/10.1246/bcsj.32.1242 . [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]

Spaght, Thomas, et al., 1932
Spaght, M.E.; Thomas, S.B.; Parks, G.S., Some heat capacity data on organic compounds obtained with a radiation calorimeter, J. Phys. Chem., 1932, 36, 882-888. [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Eibert, 1944
Eibert, J., Thesis Washington University (St. Louis), 1944. [all data]

Hildebrand, Duschak, et al., 1917
Hildebrand, J.H.; Duschak, A.D.; Foster, A.H., and Beebe, C.W. The specific heats and heats of fusion of triphenylmethane, anthraquinone and anthracene, J. Am. Chem. Soc., 1917, 39, 2293-2297. [all data]

Notes

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• Symbols used in this document:
  

  S°gas	Entropy of gas at standard conditions
  Tboil	Boiling point
  Tfus	Fusion (melting) point
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔsubH	Enthalpy of sublimation
  ΔsubH°	Enthalpy of sublimation at standard conditions
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions

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