Pyrene
- Formula: C16H10
- Molecular weight: 202.2506
- IUPAC Standard InChIKey: BBEAQIROQSPTKN-UHFFFAOYSA-N
- CAS Registry Number: 129-00-0
- 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: β-Pyrene; Benzo[def]phenanthrene; Pyren; Coal tar pitch volatiles:pyrene
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Condensed phase thermochemistry data
Go To: Top, IR Spectrum, 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:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°solid | 29.92 ± 0.55 | kcal/mol | Review | Roux, Temprado, et al., 2008 | There are sufficient literature values to make a qualified recommendation where the suggested value is in good agreement with values predicted using thermochemical cycles or from reliable estimates. In general, the evaluated uncertainty limits are on the order of (2 to 4) kJ/mol.; DRB |
ΔfH°solid | 29.99 ± 0.30 | kcal/mol | Ccr | Smith, Stewart, et al., 1980 | ALS |
ΔfH°solid | 27.41 ± 0.09 | kcal/mol | Ccr | Westrum and Wong, 1967 | ALS |
ΔfH°solid | 27.42 ± 0.85 | kcal/mol | Ccb | Richardson and Parks, 1939 | Reanalyzed by Cox and Pilcher, 1970, Original value = 26.90 kcal/mol; see Richardson, 1939; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -1876.4 ± 0.24 | kcal/mol | Ccr | Smith, Stewart, et al., 1980 | Corresponding ΔfHºsolid = 29.97 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°solid | -1873.83 ± 0.09 | kcal/mol | Ccr | Westrum and Wong, 1967 | Corresponding ΔfHºsolid = 27.44 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°solid | -1873.81 ± 0.84 | kcal/mol | Ccb | Richardson and Parks, 1939 | Reanalyzed by Cox and Pilcher, 1970, Original value = -1872.97 kcal/mol; see Richardson, 1939; Corresponding ΔfHºsolid = 27.42 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°solid,1 bar | 53.750 | cal/mol*K | N/A | Wong and Westrum, 1971 | DH |
S°solid,1 bar | 51.41 | cal/mol*K | N/A | Jacobs and Parks, 1934 | Extrapolation below 90 K, 59.79 J/mol*K. Hump in Cp curve around 116 K, probably 2nd order transition. H = 100 J/mol.; DH |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
54.818 | 298.15 | Smith, Stewart, et al., 1980 | DH |
54.900 | 298.15 | Wong and Westrum, 1971 | T = 5 to 484 K.; DH |
54.410 | 291.1 | Jacobs and Parks, 1934 | T = 94 to 292 K. Value is unsmoothed experimental datum.; DH |
IR Spectrum
Go To: Top, Condensed phase thermochemistry data, References, Notes
Data compiled by: Coblentz Society, Inc.
Data compiled by: Timothy J. Johnson, Tanya L. Myers, Yin-Fong Su, Russell G. Tonkyn, Molly Rose K. Kelly-Gorham, and Tyler O. Danby
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
References
Go To: Top, Condensed phase thermochemistry data, IR 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]
Smith, Stewart, et al., 1980
Smith, N.K.; Stewart, R.C., Jr.; Osborn, A.G.; Scott, D.W.,
Pyrene: vapor pressure, enthalpy of combustion, and chemical thermodynamic properties,
J. Chem. Thermodyn., 1980, 12, 919-926. [all data]
Westrum and Wong, 1967
Westrum, E.F., Jr.; Wong, S.,
Strain energies and thermal properties of globular and polynuclear aromatic molecules,
AEC Rept. Coo-1149-92, Contract AT(11-1)-1149, 1967, 1-7. [all data]
Richardson and Parks, 1939
Richardson, J.W.; Parks, G.S.,
Thermal data on organic compounds. XIX. Modern combustion data for some non-volatile compounds containing carbon, hydrogen and oxygen,
J. Am. Chem. Soc., 1939, 61, 3543-3546. [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]
Richardson, 1939
Richardson, J.W.,
Precise determination of the heats of combustion of some representative organic compounds, Ph.D. Thesis for Standford University, 1939, 1-122. [all data]
Wong and Westrum, 1971
Wong, W-K.; Westrum, E.F., Jr.,
Thermodynamics of polynuclear aromatic molecules. I. Heat capacities and enthalpies of fusion of pyrene, flouranthene, and triphenylene,
J. Chem. Thermodynam., 1971, 3, 105-124. [all data]
Jacobs and Parks, 1934
Jacobs, C.J.; Parks, G.S.,
Thermal data on organic compounds. XIV. Some heat capacity, entropy and free energy data for cyclic substances,
J. Am. Chem. Soc., 1934, 56, 1513-1517. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, IR Spectrum, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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