VIKTOR M ANDRIANOV
Articles written in Journal of Chemical Sciences
Volume 128 Issue 12 December 2016 pp 1933-1942 Regular Article
Structure of N'-(adamantan-2-ylidene)benzohydrazide, a potential antibacterial agent, in solution: Molecular dynamics simulations, quantum chemical calculations and Ultraviolet–visible spectroscopy studies
The molecular dynamics simulations of the structure of the N'-(adamantan-2-ylidene)benzohydrazide followed by the quantum chemical calculations at the DFT level of theory have identified four stable conformers of this potential antibacterial agent in solution: one “central” cis- and three (“central”, “left” and “right”) trans-conformers. The UV-Vis absorption spectrum in the 220–320 nm region in the ethanol solution reveals two bands that can be primarily explained based on the ab initio calculations of the spectral characteristics of the “side” trans-conformers at the MRPT level of theory. However, the close energy values for thecalculated cis- S₁ ← S₀ and “side” trans- S₂ ← S₀ transitions cannot exclude the presence of cis-conformer in solution. Therefore, the data obtained show that the coexistence of both trans-conformers and cis-conformer should be taken into consideration when studying the pharmaceutical properties of the title molecule.
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