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Citation: Xu Hong, Wu Dingquan, Qu Songsheng. STUDIES ON THERMOCHEMISTRY OF PORPHYRINS Ⅵ, The Standard Energies of Combustion and Standard Enthalpies of Formation of Tetramethoxyphenylporphyrin and Tetradimethylaminophenylporphyrin[J]. Acta Physico-Chimica Sinica, ;1989, 5(06): 745-749. doi: 10.3866/PKU.WHXB19890621 shu

STUDIES ON THERMOCHEMISTRY OF PORPHYRINS Ⅵ, The Standard Energies of Combustion and Standard Enthalpies of Formation of Tetramethoxyphenylporphyrin and Tetradimethylaminophenylporphyrin

1.
Department of Chemistry; Wuhan University; Wuhan

Received Date: 28 June 1988
Available Online: 15 December 1989

Using a precision static oxygen-bomb calorimeter, the standard energies of combustion at 298.15 K of tetra-(o-methoxyphenyl)porphyrin and tetra-(p-dimethylaminophenyl) porphyrin were determined to be-32. 7967±0.0122 kJ g~(-1), -34.5011±0.0115 kJ g~(-1) respectively, the corresponding standard enthalpies of formation at 298.15K were calculated to be -205.8±9.0 kJ mol~(-1), -434.8±9.1 kJ mol~(-1).
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