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1 August 2001 Photochemical synanti Isomerization Reaction in N4-Hydroxycytosine. An Experimental Matrix Isolation and Theoretical Study
Leszek Lapinski, Maciej J. Nowak, Ludwik Adamowicz
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Abstract

Infrared spectra of N4-hydroxycytosine isolated in argon and nitrogen low-temperature matrixes are reported. The compound was found to adopt the syn structure of the imino-oxo tautomeric form exclusively. A photoreaction (λ > 250 nm) converting this form into the anti isomer was observed. The reaction is reversible and leads to a photostationary point. The initial infrared spectrum and the spectrum of the photoproduct were assigned to the syn and anti isomers, respectively. This assignment is based on a close agreement between the experimental spectra and the spectra theoretically simulated at the DFT(B3LYP)/6-31 G** level of theory.

Leszek Lapinski, Maciej J. Nowak, and Ludwik Adamowicz "Photochemical synanti Isomerization Reaction in N4-Hydroxycytosine. An Experimental Matrix Isolation and Theoretical Study," Photochemistry and Photobiology 74(2), 253-260, (1 August 2001). https://doi.org/10.1562/0031-8655(2001)074<0253:PSAIRI>2.0.CO;2
Received: 25 January 2001; Accepted: 1 May 2001; Published: 1 August 2001
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