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The preparation and X-ray structural study of complexes that catalyze isocyanate cyclotrimerization

  • Physical Chemistry
  • Published:
Russian Chemical Bulletin Aims and scope

Abstract

A 1∶1-complex of trinitrophenol with benzyldimethylamine (1) and a 1∶1∶1-complex, the product of the interaction of benzyldimethylamine, glycidyl phenyl ether, and phenol (2), have been synthesized and characterized by means of X-ray analysis. Complex1 is a precursor for the catalysts of selective isocyanate cyclotrimerization, while complex2 is one of those catalysts. In the crystal structure complex1 forms H-bonded cationic-anionic aggregates with proton transfer from phenol to the N-atom of the tertiary amine. Complex2 crystallizes as a monohydrate (2a) with a strong H-bond between the quaternary ammonium and phenolic components, and exists in crystals in the form of globular H-bonded dimeric hydrates. Possible pathways of dissociation of complex2a are discussed. The data obtained may be used as a basis for further interpretation of the regularities of cyclotrimerization of isocyanates catalyzed by complexes of this type.

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Authors and Affiliations

  1. A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 117913, Moscow, Russian Federation

    V. A. Pankratov, Ts. M. Frenkel, A. E. Shvorak, S. V. Lindeman & Yu. T. Struchkov

Authors
  1. V. A. Pankratov
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  2. Ts. M. Frenkel
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  3. A. E. Shvorak
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  4. S. V. Lindeman
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  5. Yu. T. Struchkov
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Additional information

Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No 1, pp. 92–97, January, 1993.

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Pankratov, V.A., Frenkel, T.M., Shvorak, A.E. et al. The preparation and X-ray structural study of complexes that catalyze isocyanate cyclotrimerization. Russ Chem Bull 42, 81–87 (1993). https://doi.org/10.1007/BF00699980

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  • DOI: https://doi.org/10.1007/BF00699980

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