Photoisomerization of 1,2‐Di(4‐pyridyl)ethylene According to NMR and UV Spectroscopy Data and Density Functional Modeling

Photoisomerization of 1,2‐di(4‐pyridyl)ethylene under UV irradiation was studied by NMR and UV spectroscopy in solutions of acetone, acetonitrile and chloroform. It has been established that in the studied solutions under irradiation, geometric photoisomerization occurs: the trans‐isomer transforms...

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Bibliographic Details
Published in:Photochemistry and photobiology 2023-11, Vol.99 (6), p.1378-1383
Main Authors: Shaidullina, Amina F., Sharipova, Alsu R., Volkov, Michael Yu, Savostina, Liudmila I., Gafiyatullin, Linar G., Turanova, Olga A., Turanov, Alexander N.
Format: Article
Language:English
Subjects:
Absorption spectra
Acetonitrile
Chloroform
Ethylene
Irradiation
Isomers
Modelling
NMR
Nuclear magnetic resonance
Radiation
Spectroscopy
Ultraviolet radiation
Ultraviolet spectroscopy
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Summary:Photoisomerization of 1,2‐di(4‐pyridyl)ethylene under UV irradiation was studied by NMR and UV spectroscopy in solutions of acetone, acetonitrile and chloroform. It has been established that in the studied solutions under irradiation, geometric photoisomerization occurs: the trans‐isomer transforms into the cis‐isomer and then cyclization occurs. DFT modeling of the listed processes, states and UV absorption spectra of the sample in an acetonitrile solution was performed. Photoisomerization of 1,2‐di(4‐pyridyl)ethylene under UV irradiation was studied by NMR and UV spectroscopy in solutions of acetone, acetonitrile and chloroform. It has been established that in the studied solutions under irradiation, geometric photoisomerization occurs: the trans‐isomer transforms into the cis‐isomer and then cyclization occurs. DFT modeling of the listed processes, states and UV absorption spectra of the sample in an acetonitrile solution was performed.
ISSN:0031-8655
1751-1097
DOI:10.1111/php.13785