Conclusions
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1.
1-(p-X-Phenyl)-1-methylsilacyclobutanes and (p-X-phenyl)-trimethylsilanes were produced, where X=H, CH3, Cl, N(CH3)2, OCH3, CH2Si(CH3)3.
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2.
On the basis of the data on the UV spectra and the spectra of complexes with charge transfer of these compounds with tetracyanoethylene, a greater acceptor capacity of the silacyclobutyl group was detected in the ground and excited states in comparison with the trimethylsilyl groups.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 1998–2002, September, 1975.
The authors are grateful to B. A. Korolev for aid in determining the values of pKa of p-substituted dimethylanilines.
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Pyatkina, T.V., Traven', V.F., Babich, É.D. et al. Electronic effects of silicon in phenylsilacyclobutanes. Russ Chem Bull 24, 1879–1882 (1975). https://doi.org/10.1007/BF00930156
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DOI: https://doi.org/10.1007/BF00930156