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Standard enthalpies of combustion and formation of tetraphenylporphin
Journal article   Peer reviewed

Standard enthalpies of combustion and formation of tetraphenylporphin

D R Zakirov, D V Solomin, A V Volkov, A S Semeikin and M I Bazanov
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY, Vol.73(12), pp.2058-2059
01/12/1999

Abstract

Chemistry Chemistry, Physical Physical Sciences Science & Technology
The energy of combustion of tetraphenylporphin was measured in a liquid isothermal-shell calorimeter. The standard enthalpies of combustion (Delta(c)H degrees = -22971.7 +/- 33.6 kJ/mol) and formation (Delta(f)H degrees = 1174.8 +/- 33.7 kJ/mol) of the porphyrin under study were calculated. It was shown that the calculated Delta(c)H degrees value agrees closely with that estimated by the Hendrick equation with a discrepancy within 0.61%.

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