Research Article

Temperature Dependence of the Entropy and the Heat Capacity Calculated from the Raman Frequency Shifts for Solid Benzene, Naphthalene and Anthracene

Volume: 25 Number: 3 September 1, 2022
EN

Temperature Dependence of the Entropy and the Heat Capacity Calculated from the Raman Frequency Shifts for Solid Benzene, Naphthalene and Anthracene

Abstract

Temperature dependences of the free energy (F), entropy (S) and the heat capacity (C_v) are calculated (P=0) for the organic compounds (solid benzene, naphthalene and anthracene) by using the quasiharmonic approximation. Contributions to those thermodynamic functions due to the Raman frequencies of lattice modes (solid benzene), librational modes (naphthalene), phonons and vibrons (anthracene) are taken into account in our calculations. We obtain that similar linear increase of F and nonlinear increase of S and C_v, occur with the increasing temperature in benzene and naphthalene. This linear (F) and nonlinear (S, C_v) increase is rather different for anthracene as the molecular structure becomes complex (benzene-naphthalene-anthracene), as expected. Our calculations by the quasiharmonic approximation can be compared with the experiments for those organic compounds.

Keywords

References

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Details

Primary Language

English

Subjects

Thermodynamics and Statistical Physics

Journal Section

Research Article

Authors

Publication Date

September 1, 2022

Submission Date

April 25, 2022

Acceptance Date

June 23, 2022

Published in Issue

Year 2022 Volume: 25 Number: 3

APA
Yurtseven, H., & Özdemir, H. (2022). Temperature Dependence of the Entropy and the Heat Capacity Calculated from the Raman Frequency Shifts for Solid Benzene, Naphthalene and Anthracene. International Journal of Thermodynamics, 25(3), 55-62. https://doi.org/10.5541/ijot.1108782
AMA
1.Yurtseven H, Özdemir H. Temperature Dependence of the Entropy and the Heat Capacity Calculated from the Raman Frequency Shifts for Solid Benzene, Naphthalene and Anthracene. International Journal of Thermodynamics. 2022;25(3):55-62. doi:10.5541/ijot.1108782
Chicago
Yurtseven, Hamit, and Hilal Özdemir. 2022. “Temperature Dependence of the Entropy and the Heat Capacity Calculated from the Raman Frequency Shifts for Solid Benzene, Naphthalene and Anthracene”. International Journal of Thermodynamics 25 (3): 55-62. https://doi.org/10.5541/ijot.1108782.
EndNote
Yurtseven H, Özdemir H (September 1, 2022) Temperature Dependence of the Entropy and the Heat Capacity Calculated from the Raman Frequency Shifts for Solid Benzene, Naphthalene and Anthracene. International Journal of Thermodynamics 25 3 55–62.
IEEE
[1]H. Yurtseven and H. Özdemir, “Temperature Dependence of the Entropy and the Heat Capacity Calculated from the Raman Frequency Shifts for Solid Benzene, Naphthalene and Anthracene”, International Journal of Thermodynamics, vol. 25, no. 3, pp. 55–62, Sept. 2022, doi: 10.5541/ijot.1108782.
ISNAD
Yurtseven, Hamit - Özdemir, Hilal. “Temperature Dependence of the Entropy and the Heat Capacity Calculated from the Raman Frequency Shifts for Solid Benzene, Naphthalene and Anthracene”. International Journal of Thermodynamics 25/3 (September 1, 2022): 55-62. https://doi.org/10.5541/ijot.1108782.
JAMA
1.Yurtseven H, Özdemir H. Temperature Dependence of the Entropy and the Heat Capacity Calculated from the Raman Frequency Shifts for Solid Benzene, Naphthalene and Anthracene. International Journal of Thermodynamics. 2022;25:55–62.
MLA
Yurtseven, Hamit, and Hilal Özdemir. “Temperature Dependence of the Entropy and the Heat Capacity Calculated from the Raman Frequency Shifts for Solid Benzene, Naphthalene and Anthracene”. International Journal of Thermodynamics, vol. 25, no. 3, Sept. 2022, pp. 55-62, doi:10.5541/ijot.1108782.
Vancouver
1.Hamit Yurtseven, Hilal Özdemir. Temperature Dependence of the Entropy and the Heat Capacity Calculated from the Raman Frequency Shifts for Solid Benzene, Naphthalene and Anthracene. International Journal of Thermodynamics. 2022 Sep. 1;25(3):55-62. doi:10.5541/ijot.1108782

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