SCHEDULED MAINTENANCE
A theoretical approach is described to rationalize and predict the solvatochromic behaviour of vinylogous γ-pyridones. The theoretical curves obtained are shown to reproduce the experimental UV–VIS spectroscopic behaviour of dyes 1, 2, 3 and 5. The model reconciles previous conflicting reports on the solvatochromism of these and related dyes.
L. da Silva, C. Machado and M. C. Rezende, J. Chem. Soc., Perkin Trans. 2, 1995, 483 DOI: 10.1039/P29950000483
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