K. Celnik, Z. Jankowski, R. Stolarski
1986
Citations
0
Influential Citations
1
Citations
Journal
Dyes and Pigments
Abstract
Abstract The isomeric 3-dimethylamina- and 4-dimethylamino-7H,9H-quinazolmo [3,2-b]benz[d,e]isoquinolin-7-ones have been synthesized. The structure of the dyes was confirmed by IR and UV-visible spectroscopy and by use of quantum calculations by the PPP method. Alkalinity constants of the compounds were measured and the positions at which the dimethylamino-7H, 9H-quinazolino[3,2-b]benz[d,e]isoquinolin-7-ones are protonated were determined by a number of quantum calculations. Emission spectra of the isomeric solutions of the dyes and their protonated forms are reported.