Spectra of aryldiazonium chlorides and the structure of diazonium cations

  • L. A. Kazitsyna
  • N. B. Dzegilenko
  • A. V. Upadysheva
  • V. V. Mishchenko
  • O. A. Reutov
Physical Chemistry

Conclusions

  1. 1.

    The structure of aryldiazonium cations was discussed, bringing in methods of IR and UV spectroscopy, x-ray diffraction study, and the MO LCAO method.

     
  2. 2.

    Both solid aryldiazoniums and their solutions are characterized by the presence of a triple bond in the diazonium group and a positive charge localized on both nitrogen atoms.

     
  3. 3.

    A difference of the UV spectra of the ortho- and meta-isomers from the spectra of the para-isomers was demonstrated for aryldiazonium cations.

     
  4. 4.

    The influence of the nature of the substituent upon the UV spectra of the aryldiazonium cations was investigated, and it was shown that the basic absorption band in the spectra of phenyldiazonium cations experiences a bathochromic shift with increasing electron-donor strength of the substituent in aryldiazonium cations.

     
  5. 5.

    It was shown by the MO LCAO method that the nature of the diazonium group (the presence of a triple bond and a delocalized positive charge on the two nitrogen atoms) is retained when any substituent is introduced, including the dimethylamino group.

     

Keywords

Nitrogen Atom Positive Charge Diffraction Study Dimethylamino Bathochromic Shift 

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Copyright information

© Consultants Bureau 1968

Authors and Affiliations

  • L. A. Kazitsyna
    • 1
  • N. B. Dzegilenko
    • 1
  • A. V. Upadysheva
    • 1
  • V. V. Mishchenko
    • 1
  • O. A. Reutov
    • 1
  1. 1.M. V. Lomonosov Moscow State UniversityUSSR

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