Electronic absorption spectra and structures of the conjugate acids of 5-hydroxy- and 5-aminoanthraquinonepyridines

The structures of 5-hydroxy and 5-amino derivatives of naphtho[2,3-h]quinoline-7,12-dione (anthraquinonepyridine) and their conjugate acids were investigated by experimental and computational [Pariser-Parr-Pople (PPP)] methods. The hydroxy derivative exists in the keto form, while the cation of the hydroxy form is formed during protonation; the amino derivative exists in the amino form but is converted to a cation with an imino structure upon protonation. In both cases the addition of a proton is accompanied by rearrangement of the π-electon structure of the molecules. The assignment of the Sππ* transitions in the electronic spectra of the bases and their conjugate acids is given on the basis of a quantum-chemical calculation. © 1981 Plenum Publishing Corporation.

Редакторы
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Издательство
Латвийский институт органического синтеза Латвийской академии наук / Springer New York Consultants Bureau
Номер выпуска
12
Язык
Английский
Страницы
1248-1254
Статус
Опубликовано
Подразделение
-
Номер
-
Том
16
Год
1980
Организации
  • 1 Patrice Lumumba People's Friendship University, Moscow, 117923, Russian Federation
Ключевые слова
-
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/1520/