Abstract
The electronic spectra of the tetraazanaphthalenes are expected to be particularly interesting and instructive, as they should demonstrate many of the features of the simpler mono- and diazaaromatics [1], but with the added complexity caused by a higher degree of nitrogen substitution. In particular, 1,4,5,8-tetraazanaphthalene (1458-TAN, see Figure below) has long been recognised as a molecule in which long-range interactions between n-orbitals may have profound effects on the absorption spectrum [2], This paper describes comparisons between calculated and experimental spectra.
© 1996 Optical Society of America
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