Electronic absorption spectra and acidity of new condensed systems of uracil-derivatives of 1,3-dithiolo[4,5-d]pyrimidine

1992 ◽  
Vol 28 (3) ◽  
pp. 350-354 ◽  
Author(s):  
O. Ya. Neiland ◽  
N. N. Zagorskaya
Keyword(s):  
Absorption Spectra ◽  
Electronic Absorption ◽  
Electronic Absorption Spectra ◽  
Uracil Derivatives ◽  
Derivatives Of ◽  
Condensed Systems

scholarly journals Structure and electronic absorption spectra of cyanine dyes – derivatives of tetrazolo- and triazoloisoindole

2017 ◽  
Vol 5 (2) ◽  
pp. 95-102
Author(s):  
Tatyana Yegorova ◽  
Andriy Kysil ◽  
Igor Levkov ◽  
Andrei Ilchenko ◽  
Zoia Voitenko
Keyword(s):  
Electronic Structure ◽  
Absorption Spectra ◽  
Electronic Absorption ◽  
Electronic Absorption Spectra ◽  
Cyanine Dyes ◽  
End Groups ◽  
Electron Donation ◽  
Derivatives Of

The electronic structure and absorption spectra of cyanine dyes – tetrazoloisoindole derivatives and triazoloisoindole were calculated. It was shown that these dyes, in terms of their electronic structure, are trimethine cyanine, although formally they are monomethine cyanine. The electron donation of the tetrazoloisoindole and triazoloisoindole residues was determined on the Ilchenko scale, which allows them to quantitatively quantify their Bruker basicity in comparison with the most known heterocyclic end groups of cyanine dyes.

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