4-Substituted 1-Acyloxypyridine-2(1<i>H</i>)-thiones: Experimental and Computational Studies of the Substituent Effect on Electronic Absorption Spectra
作者:Aleksandra Jankowiak、Piotr Kaszynski
DOI:10.1021/jo901522r
日期:2009.10.2
practically substituent independent. Both absorption bands exhibit a modest negative solvatochromic effect. The experimental absorption energies correlate better with excitation energies calculated for N-acetyloxy analogues 2 with the ZINDO//DFT than with the TD-DFT//DFT method. Calculations for a series of 12 N-acetates 2 predict the most blue-shifted π → π* transition for the alkoxy substituent and most