Abstract
Lemi Türker
1,5-Type proton tautomerism of 2-(dinitromethylene)-4,5-dinitro-2,3-dihydro-1H-imidazole structure is considered within the constraints of density functional theory at the level of B3LYP/6-311++G(d,p). One of the pentad tautomers has been found to be almost as stable as the parent structure. The local aromaticity search (NICS(0)) indicated that both of the structures have an embedded aromatic imidazole ring system, which is not expected at first sight for the parent structure and possible causes of it are sought. Also, various quantum chemical results, calculated IR, and UV spectra are obtained and discussed.
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