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Graphical abstract A new pyrrole containing hydrazone ethyl 4-((3,5-dinitrobenzoyl)-hydrazonomethyl)-3,5-dimethyl-1H-pyrrole-2-carboxylate (PDNBAH) has been synthesized and characterized by FT-IR, 1 H NMR, UV–visible spectroscopy. All the quantum chemical calculations have been performed by DFT...
Graphical abstract The pseudoephedrine (Psed) reactions molybdate and DDQ reagents respectively were studied spectrophotometrically at optimum conditions of solvents, reactant concentration, temperature, time, λ max and pH. Application of the molar ratio method (MRM) on the Psed–molybdate...
Graphical abstract The FT-IR, FT-Raman, 1 H and 13 C NMR, UV–visible spectral measurements of 2-amino-4-methylbenzothiazole and complete assignments of the observed spectra have been proposed. Ab initio and DFT calculations have been performed and the structural parameters of the compound are...
Graphical abstract The figure displays absorption (black line) and emission (red line) spectra calculated for the model structures of PPV-ether (dash line) and C 1–4 PPV-ether (solid line) using TD-DFT functional. A redshifting is founded when adding methoxyl and butoxyl to the PPV-ether.
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