Conclusions
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1.
On the example of the previously unknown free radicals, namely 2,2,6,6-tetramethyl-4-acetoxy-piperidyl-1-oxyl, the di-(2,2,6,6-tetramethyl-1-oxyl-4-piperidyl) esters of suberic, azelaic and 1,1′-ferrocenedicarboxylic acids, and tri-(2,2,6,6-tetramemyl-1-oxyl-4-piperidyl-β-ethyl) phosphite, it was shown that the polarography and amperometric titration methods can be used to analyze compounds of this type.
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2.
Both of the iminoxyl groups and the ferrocene fragment of the di-(2,2,6,6-tetramethyl-1-oxylpip-eridyl) ester of 1,1′-ferrocenedicarboxylic acid undergo a simultaneous three-electron discharge at a platinum microdisk electrode.
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Literature cited
A. A. Usvyatsov, V. T. Solomatin, É. G. Rozantsev, and V. A. Radionov, Data of Fourth All-Union Conference on Polarography [in Russian], Alma-Ata (1969), p. 329.
V. T. Solomatin and A. A. Usvyatsov, Zavodsk. Lab.,35, 778 (1969).
Nonbenzenoid Aromatic Compounds [Russian translation], IL (1963).
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2296–2298, October, 1971.
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Krylov, Y.A., Usvyatsov, A.A., Ivanov, V.P. et al. Synthesis and electrochemical study of stable iminoxyl radicals. Russ Chem Bull 20, 2167–2169 (1971). https://doi.org/10.1007/BF00851274
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DOI: https://doi.org/10.1007/BF00851274