Synthesis, spectroscopic investigations and computational study of 4-((9,10-dioxo-9,10-dihydroanthracen-1-yl)oxy)benzaldehyde
摘要:
The molecular structure, vibrational frequencies, corresponding vibrational assignments of 44(9,10dioxo-9,10-dihydroanthracen-1-yl)oxy)benzaldehyde in "trans" and "ana" forms have been investigated by UV-Vis, FT-IR and NMR spectroscopy as well as density functional theory (DFT) B3LYP method with 6-311++G(d,p) basis set. The vibrational analysis of the two forms of cited compound was performed by means of infrared absorption spectroscopy in combination with theoretical simulations. The obtained geometrical parameters and wavenumbers of vibrational normal modes from the OFT method were in good consistency with the experimental values. The H-1 and C-13 nuclear magnetic resonance (NMR) chemical shifts of the molecule were calculated by MO method. Computed molecular orbital and time dependent DFT oscillator renderings agree closely with experimental observations. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using NBO analysis. In order to predict the reactive sites, a molecular electrostatic potential map (MEP) for the title compound was obtained. Transition structures were calculated by QST3 and IRC methods which yielded the potential energy surface and activation energy. (C) 2014 Elsevier B.V. All rights reserved.