Solvatochromism of isatin based Schiff bases: An LSER and LFER study
| Autor: | B Jasmina Nikolic, Hana Elshaflu, D Vesna Nikolic, Z Sasa Drmanic, R Dominik Brkic, D Aleksandar Marinkovic, R Aleksandra Bozic |
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| Rok vydání: | 2016 |
| Předmět: |
LFER
Substituent LSER 02 engineering and technology 010402 general chemistry Photochemistry 01 natural sciences isatin Kamlet-Taft equation lcsh:Chemistry chemistry.chemical_compound Computational chemistry Molecule Taft equation Isatin Chemical shift Solvatochromism Solvation General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Solvent chemistry lcsh:QD1-999 Schiff bases 0210 nano-technology |
| Zdroj: | Journal of the Serbian Chemical Society Journal of the Serbian Chemical Society, Vol 81, Iss 9, Pp 979-997 (2016) |
| Popis: | The derivatives of isatin have already been reported to show a variety of biological activities. However, there has been no report on solvatochromic effect of isatin derivatives so far, and that could be of interest to study and relate to their electronic structure, as a part of the characterisation of these compounds. Linear solvation energy relationships (LSER) were used to analyze solvent influence on the UV absorption maxima shifts of investigated isatin derivatives, i.e. isatin based Schiff bases, by using Kamlet-Taft model. Linear free energy relationships (LFER) were applied to the substituent-induced NMR chemical shifts (SCS) using SSP (single substituent parameter). The obtained correlations together with theoretical calculations gave insight into the influence of the molecular conformation on the transmission of substituent effects, as well as on solute/solvent interactions. The molecular electrostatic potential (MEP) surface map was plotted over the optimized geometry of the molecules in order to visualize electron density distribution and explain origin of solvent/solute interactions. [Projekat Ministarstva nauke Republike Srbije, br. 172013] |
| Databáze: | OpenAIRE |
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