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Matrix Isolation and IR Characterization of the Benzoyl and Benzoylperoxy Radicals
Author(s) -
Mardyukov Artur,
Sander Wolfram
Publication year - 2010
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201000153
Subject(s) - chemistry , matrix isolation , radical , infrared spectroscopy , photochemistry , spectroscopy , matrix (chemical analysis) , bond cleavage , infrared , medicinal chemistry , organic chemistry , catalysis , chromatography , quantum mechanics , optics , physics
Abstract The benzoyl radical 1 was synthesized in argon matrices by the thermal reaction of the phenyl radical 2 with CO. The IR spectrum with the C=O str. vibration at 1824.4 cm –1 is in good agreement with DFT calculations. The formation of 1 is reversible and UV irradiation results in the cleavage back to 2 and CO. The benzoyl radical 1 can react with molecular oxygen in the matrix to produce the benzoylperoxy radical 3 . Radical 3 was also characterized by IR spectroscopy in combination with DFT calculations.