UV Laser-Induced Phototransformations of Matrix-Isolated 5-Chloro-3-nitro-2-hydroxyacetophenone

Conformational changes of 5-chloro-3-nitro-2-hydroxyacetophenone were studied by experimental and theoretical methods. Phototransformations of the compound were induced in low-temperature argon matrices by using UV radiation, which was followed by FT-IR measurements. Two types of changes within the...

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Bibliographic Details
Published in:International journal of molecular sciences 2023-01, Vol.24 (2), p.1546
Main Authors: Pagacz-Kostrzewa, Magdalena, Mucha, Karolina, Wierzejewska, Maria, Filarowski, Aleksander
Format: Article
Language:English
Subjects:
Argon - chemistry
Cold Temperature
Communication
Energy
Hydrogen bonds
Lasers
Low temperature
Phase transitions
Radiation
Spectroscopy, Fourier Transform Infrared - methods
Ultraviolet radiation
Ultraviolet Rays
Vibration
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Summary:Conformational changes of 5-chloro-3-nitro-2-hydroxyacetophenone were studied by experimental and theoretical methods. Phototransformations of the compound were induced in low-temperature argon matrices by using UV radiation, which was followed by FT-IR measurements. Two types of changes within the molecule were detected: rotations of the hydroxyl and acetyl groups. A new conformer without an intramolecular hydrogen bond was generated upon irradiation with λ = 330 nm, whereas the reverse reaction was observed at 415 nm.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms24021546