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Preparation and chlorotropic transformation of crystalline diazaphosphetidine

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Abstract

Crystalline 1, 3-dimethyl-2, 2, 2, 4-tetrachloro-4-trichloromethyl-1, 3, 2-diazaphosphetidine (I) has been made by rapid cooling from the liquid, which is unstable under normal conditions. I has a trigonal-bipyramidal environment for the phosphorus atom, as has been demonstrated by35Cl NQR spectroscopy, while the nitrogen atoms in the four-membered heterocyclic have an axial equatorial position. I is stable at 77 K but on temperature rise is converted to the isomeric N, N-dimethyltrichloroacetamidinium tetrachiordphosphorate (II). The I → II chlorotropic transformation is accompanied by the coexistence of the two isomeric forms in the crystal.

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Literature cited

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Authors and Affiliations

  1. Institute of Organic Chemistry, Ukrainian Academy of Sciences, Kiev

    E. A. Romanenko

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  1. E. A. Romanenko
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Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 25, No. 2, pp. 237–240; March–April, 1989.

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Romanenko, E.A. Preparation and chlorotropic transformation of crystalline diazaphosphetidine. Theor Exp Chem 25, 216–218 (1989). https://doi.org/10.1007/BF01135015

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  • DOI: https://doi.org/10.1007/BF01135015

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