Phenanthrene, 4-methyl-
- Formula: C15H12
- Molecular weight: 192.2558
- IUPAC Standard InChIKey: LOCGAKKLRVLQAM-UHFFFAOYSA-N
- CAS Registry Number: 832-64-4
- 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: 4-Methylphenanthrene
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 46.80 ± 0.25 | kcal/mol | Ccr | Chirico, Hossenlopp, et al., 1989 | Hfusion=14.04 kJ/mol |
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:
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 | 24.48 ± 0.16 | kcal/mol | Ccr | Chirico, Hossenlopp, et al., 1989 | Hfusion=14.04 kJ/mol; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -1845.14 ± 0.13 | kcal/mol | Ccr | Chirico, Hossenlopp, et al., 1989 | Hfusion=14.04 kJ/mol; Corresponding ΔfHºsolid = 24.479 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°solid,1 bar | 58.449 | cal/mol*K | N/A | Chirico, Hossenlopp, et al., 1989 | DH |
S°solid,1 bar | 58.449 | cal/mol*K | N/A | Chirico, Hossenlopp, et al., 1988 | DH |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
62.890 | 298.15 | Chirico, Hossenlopp, et al., 1989 | T = 10 to 500 K. Value is a graphical extrapolation.; DH |
62.890 | 298.15 | Chirico, Hossenlopp, et al., 1988 | T = 10 to 500 K. Value is a graphical extrapolation.; DH |
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
AC - William E. Acree, Jr., James S. Chickos
DRB - Donald R. Burgess, Jr.
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Ttriple | 324.920 | K | N/A | Chirico, Hossenlopp, et al., 1989, 2 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.01 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 22.3 | kcal/mol | N/A | Chirico, Hossenlopp, et al., 1989 | DRB |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
17.8 ± 0.05 | 380. | EB,IP | Chirico, Hossenlopp, et al., 1989 | Based on data from 368. to 647. K.; AC |
17.2 ± 0.02 | 420. | EB,IP | Chirico, Hossenlopp, et al., 1989 | Based on data from 368. to 647. K.; AC |
16.5 ± 0.02 | 460. | EB,IP | Chirico, Hossenlopp, et al., 1989 | Based on data from 368. to 647. K.; AC |
15.9 ± 0.02 | 500. | EB,IP | Chirico, Hossenlopp, et al., 1989 | Based on data from 368. to 647. K.; AC |
15.3 ± 0.02 | 540. | EB,IP | Chirico, Hossenlopp, et al., 1989 | Based on data from 368. to 647. K.; AC |
14.7 ± 0.02 | 580. | EB,IP | Chirico, Hossenlopp, et al., 1989 | Based on data from 368. to 647. K.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
3.356 | 324.9 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
0.029 | 182. | Domalski and Hearing, 1996 | CAL |
0.026 | 295. | ||
10.33 | 324.9 |
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.00535 | 182.0 | crystaline, III | crystaline, II | Chirico, Hossenlopp, et al., 1989 | Extrapolated value.; DH |
0.00796 | 295.0 | crystaline, II | crystaline, I | Chirico, Hossenlopp, et al., 1989 | Extrapolated value.; DH |
3.3554 | 324.925 | crystaline, I | liquid | Chirico, Hossenlopp, et al., 1989 | DH |
0.00535 | 182.0 | crystaline, III | crystaline, II | Chirico, Hossenlopp, et al., 1988 | Extrapolated value.; DH |
0.00796 | 295. | crystaline, II | crystaline, I | Chirico, Hossenlopp, et al., 1988 | Extrapolated value.; DH |
3.3554 | 324.925 | crystaline, I | liquid | Chirico, Hossenlopp, et al., 1988 | DH |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.029 | 182.0 | crystaline, III | crystaline, II | Chirico, Hossenlopp, et al., 1989 | Extrapolated; DH |
0.026 | 295.0 | crystaline, II | crystaline, I | Chirico, Hossenlopp, et al., 1989 | Extrapolated; DH |
10.33 | 324.925 | crystaline, I | liquid | Chirico, Hossenlopp, et al., 1989 | DH |
0.029 | 182.0 | crystaline, III | crystaline, II | Chirico, Hossenlopp, et al., 1988 | Extrapolated; DH |
0.026 | 295. | crystaline, II | crystaline, I | Chirico, Hossenlopp, et al., 1988 | Extrapolated; DH |
10.33 | 324.925 | crystaline, I | liquid | Chirico, Hossenlopp, et al., 1988 | DH |
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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.1 ± 0.1 | EI | Dougherty, Bertorello, et al., 1971 | LLK |
7.70 ± 0.02 | EI | Nounou, 1966 | RDSH |
7.70 ± 0.02 | EI | Bonnier, Gelus, et al., 1965 | RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C13H9+ | 12.7 ± 0.1 | C2H3 | EI | Dougherty, Bertorello, et al., 1971 | LLK |
C15H9+ | 14.4 ± 0.1 | H2+H | EI | Dougherty, Bertorello, et al., 1971 | LLK |
C15H11+ | 12.0 ± 0.1 | H | EI | Dougherty, Bertorello, et al., 1971 | LLK |
C15H11+ | 12.2 ± 0.2 | H | EI | Nounou, 1966 | RDSH |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change 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, Hossenlopp, et al., 1989
Chirico, R.D.; Hossenlopp, I.A.; Nguyen, A.; Steele, W.V.; Gammon, B.E.,
The thermodynamic properties of 4-methylphenanthrene,
J. Chem. Thermodyn., 1989, 21, 179-201. [all data]
Chirico, Hossenlopp, et al., 1988
Chirico, R.D.; Hossenlopp, I.A.; Nguyen, A.; Steele, W.V.,
The thermodynamic properties of 4-methylphenanthrene,
NIPER Report, 1988, 345, 42p. [all data]
Chirico, Hossenlopp, et al., 1989, 2
Chirico, R.D.; Hossenlopp, I.A.; Nguyen, A.; Steele, W.V.; Gammon, B.E.,
The thermodynamic properties of 4-methylphenanthrene,
J. Chem. Thermodyn., 1989, 21, 179. [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]
Dougherty, Bertorello, et al., 1971
Dougherty, R.C.; Bertorello, H.E.; Martinez de Bertorello, M.,
Mass spectra and thermochemistry of methyl phenanthrenes. A contribution to the analogy between mass spectral and thermal fragmentation reactions,
Org. Mass Spectrom., 1971, 5, 1321. [all data]
Nounou, 1966
Nounou, P.,
Etude des composes aromatiques par spectrometrie de masse. I. Mesure des potentials d'ionisation et d'apparition par la methode du potential retardateur et interpretation des courbes d'ionisation differentielle,
J. Chim. Phys., 1966, 63, 994. [all data]
Bonnier, Gelus, et al., 1965
Bonnier, J.-M.; Gelus, M.; Nounou, P.,
Contribution a l'etude de l'effet inductif et de l'effet d'hyperconjugaison dans quelques methylaromatiques,
J. Chim. Phys., 1965, 10, 1191. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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