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    Thermochemistry of 5,10,15,20-tetraphenylporphyrin

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    Name:
    TPP_Manuscipt_rev.pdf
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    Format:
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    Description:
    Accepted manuscript
    Embargo End Date:
    2021-07-08
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    Type
    Article
    Authors
    Kudin, Lev S.
    Dunaev, Anatoly M.
    Motalov, Vladimir B.
    Cavallo, Luigi cc
    Minenkov, Yury
    KAUST Department
    Chemical Science Program
    KAUST Catalysis Center (KCC)
    Physical Science and Engineering (PSE) Division
    Date
    2020-07-08
    Online Publication Date
    2020-07-08
    Print Publication Date
    2020-12
    Embargo End Date
    2021-07-08
    Submitted Date
    2020-01-21
    Permanent link to this record
    http://hdl.handle.net/10754/664394
    
    Metadata
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    Abstract
    Saturated vapor pressure of 5,10,15,20-tetraphenylporphyrin (TPP) was determined by Knudsen effusion mass spectrometry technique. The temperature dependence of the vapor pressure is described by the equation ln (p/Pa) = −(23.45 ± 0.26)⋅103/T + (37.32 ± 0.47) in the temperature range 490–615 K. The molar heat capacity measurements of TPP were performed in the temperature range 169–568 K. Quantum-chemical calculations of the structure and force field of the TPP molecule were carried out. These data were used to calculate thermodynamic functions of TPP in the solid and gas states. The enthalpy of sublimation of triclinic form of TPP was determined by the second and third laws of thermodynamics. The value ΔsH° (298.15 K) = 220 ± 12 kJ⋅mol−1 was recommended. The reaction based Feller-Peterson-Dixon approach predicts the gas phase TPP formation enthalpy ΔfH° (298.15 K) = 1004 ± 10 kJ⋅mol−1. A combination of the two last values results in the formation enthalpy of the TPP triclinic form ΔfH° (298.15 K) = 784 ± 15 kJ⋅mol−1.
    Citation
    Kudin, L. S., Dunaev, A. M., Motalov, V. B., Cavallo, L., & Minenkov, Y. (2020). Thermochemistry of 5,10,15,20-tetraphenylporphyrin. The Journal of Chemical Thermodynamics, 151, 106244. doi:10.1016/j.jct.2020.106244
    Sponsors
    This work was supported by the Ministry of science and higher education of the Russian Federation in the framework of Government order (№ FZZW-2020-0007). The authors are grateful to Ph.D. N.L. Pechnikova and Dr. V.V. Aleksandriiskii (Research Sharing Center of the Ivanovo State University of Chemistry and Technology) for the synthesis of TPP and the study of the NMR spectrum, respectively, Ph.D. D.V. Tyurin (Department of Chemistry and Technology of Higher Molecular Compounds of the Ivanovo State University of Chemistry and Technology) for the MALDI spectrum of TPP and Ph.D. A.A. Gushchin (Department of Industrial Ecology of the Ivanovo State University of Chemistry and Technology) for the analysis of TPP sample by the high performance liquid chromatography. The authors also thank Ph.D. M.S. Gruzdev (Research Sharing Center of the Institute of Solution Chemistry RAS, Ivanovo) and Ph.D. D.N. Sergeev (Forschungszentrum Jülich, IEK-2, Germany) for measuring the heat capacity of TPP in the temperature ranges 169–302 K and 328–568 K, respectively.
    Publisher
    Elsevier BV
    Journal
    Journal of Chemical Thermodynamics
    DOI
    10.1016/j.jct.2020.106244
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S002196142030063X
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.jct.2020.106244
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program; KAUST Catalysis Center (KCC)

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