Conclusions
From the data on the dipole moments and Kerr constants it follows that for dimethyl-p-tolylphosphine and di-tert-butyl-p-tolylphosphine an arrangement of the plane of the benzene ring along the bisector of the RPR angle is characteristic, which excludes the possibility of p-π conjugation in these systems.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 453–456, February, 1974.
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Raevskii, O.A., Vereshchagin, A.N., Donskaya, Y.A. et al. Spatial structure of some dialkyltolylphosphines. Russ Chem Bull 23, 422–424 (1974). https://doi.org/10.1007/BF00924705
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DOI: https://doi.org/10.1007/BF00924705