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Autor:
A. O. Plotnikova, D. A. Shelekhova, A. N. Kiselev, Yu. B. Ivanova, Sergei A. Syrbu, S. G. Pukhovskaya
Publikováno v:
Russian Journal of General Chemistry. 90:1292-1297
The acid-base properties of 5,10,15,20-tetraphenyl-21-oxaporphyrin and 5,10,15,20-tetraphenyl-21,23-dioxaporphyrin have been studied by means of spectrophotometric titration. The parameters of electronic absorption spectra and the concentration range