Infrared matrix isolation and ab initio studies of 4-oxopyrimidine; separation of the spectra of tautomers based on the phototautomeric effect
1990; Pergamon Press; Volume: 46; Issue: 1 Linguagem: Inglês
10.1016/0584-8539(93)80012-y
ISSN1873-3824
AutoresLeszek Lapiński, Jan Fulara, Maciej J. Nowak,
Tópico(s)Synthesis of Organic Compounds
ResumoThe i.r. absorption spectra of two simultaneously existing tautomers]—4-oxopyrimidine and 4- hydroxypyrimidine—isolated in several inert gas matrices are reported, and interpreted with the aid of ab initio 3–21G normal coordinate calculations. The phototautomeric effect, i.e. the change of the tautomeric form oxo → hydroxy upon u.v. irradiation is observed and used to separate the spectra of both tautomers.
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