ELECTRONIC ABSORPTION SPECTRA OF PYRYLIUM AND BENZODIHYDROCHROMENYLIUM SALTS

Authors

  • А. М. Буров N. G. Chernyshevskii Saratov State University, Saratov 410012
  • Н. В. Пчелинцева N. G. Chernyshevskii Saratov State University, Saratov 410012
  • О. В. Федотова N. G. Chernyshevskii Saratov State University, Saratov 410012

DOI:

https://doi.org/10.1007/7142

Keywords:

1, 5-diketones, benzodihydrochromenylium salts, chlorine-substituted pyrylium salts, intramolecular charge transfer

Abstract

The electronic absorption spectra of benzodihydrochromenylium, tetrahydrochromenylium, and dichloropyrylium salts were studied for the first time. It was noticed that intramolecular charge transfer takes place mainly between the substituent  at position 4 of the pyrylium ring and the  π-system of the cation as a whole, while the bathochromic shift depends substantially on the geometry of the molecule. It was shown that the chlorine atoms have an effect on the form of the spectra when they are introduced into the ring of the pyrylium cation and into the aryl substituents.

How to Cite
Burov, A. M.; Pchelintseva, N. V.; Fedotova, O. V.  Chem. Heterocycl. Compd. 2008, 44, 924. [Khim. Geterotsikl. Soedin. 2008, 1152.]

For this article in the English edition see DOI 10.1007/s10593-008-0134-1


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Published

2022-10-14

Issue

No. 8 (2008)

Section

Original Papers