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UV photoelectron spectra of 5- and 6-azauracil
Authors:David Ajó  Maurizio Casarin  Gaetano Granozzi  Ignazio Fragalá
Institution:Istituto di Chimica e Tecnologia dei Radioelementi del CNR, Padova, Italy;Istituto dt Chimica Generale ed Inorganica, Universitá di Padova, Padova, Italy;Istituto Dipartimentale di Chimica e Chimica Industriale, Catania, Italy
Abstract:The He(I) photoelectron spectra of 5-azauracil (1,3,5-triazine-2,4(1H,3H)-dione) and 6-azauracil (1,2,4-triazine-3, 5(2H,4H)-dione) are presented. The spectra are assigned by using INDO/S calculations and comparison arguments with uracil. The first ionization energy in the title compounds is higher than in the usual nucleic acid bases.
Keywords:Present address: Physikalisch-Chemisches Institut  Universität Basel  CH-4056 Basel  Switzerland  
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