Conclusions
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1.
We have obtained direct experimental proof of the formation of CTC or organic electron acceptors and free hydrocarbon radicals, some of the alternating type (triphenylmethyl, diphenylmethyl, cumene) and some of the nonalternating type (pentaphenylcyclopentadienyl).
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2.
The donor orbital involved in the formation of alternating hydrocarbon radical CTC is high and partially filled; it carries the unpaired electron.
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3.
A CTC of the stable 2,2,6,6-tetramethylpiperidin-1-oxyl radical with organic electron acceptors has been prepared, and the constant for its complexing with tetracyanoethylene was determined.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 297–303, February, 1979.
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Kuznetsov, A.A., Novikov, S.N. & Pravednikov, A.N. Donor-acceptor interaction of free radicals with organic electron acceptors. Russ Chem Bull 28, 272–278 (1979). https://doi.org/10.1007/BF00925865
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DOI: https://doi.org/10.1007/BF00925865