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The UV/VIS spectroscopic behaviour of 7H-indolo[1,2-a]quinolinium per chlorates and their precursors, i.e. 1-phenyl-2-[2-(3-X-5-methoxy-4-hydroxy phenyl)ethenyl]- 3,3- di-methyl-3H-indolium derivatives (X = Br, Cl, NO2) in binary solvent mixtures is described. Based on the solvation equilibrium constants determined using the SA-SAB-SB model, a discussion of an influence of a band-shape parameter c...
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