Conclusions
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1.
The phenyl group in 5-phenyl-1, 3-di-R-1, 3,5-diazaphosphorinanes exists preferentially in an equatorial orientation.
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2.
An analogy is observed in the change in the conformational free energy of the substituent attached to the carbon and phosphorus atoms when the ring CH2 groups are substituted by oxygen or nitrogen atoms.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1571–1574, July, 1980.
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Arbuzov, B.A., Erastov, O.A., Nikonov, G.N. et al. Orientation of phenyl group attached to phosphorus atom in 5-phenyl-1,3-di-R-1,3,5-diazaphosphorinanes. Russ Chem Bull 29, 1115–1119 (1980). https://doi.org/10.1007/BF00949165
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DOI: https://doi.org/10.1007/BF00949165