Abstract
In-silico studies are used for the prediction of the properties of several novel materials using
the computer simulation technique. The present study describes the complete description of the molecular
vibrations and electronic features of the title compound by this technique. 7-(4-nitrophenyl)benzo[6,
7]chromeno[3,2-e]pyrido[1,2-a]pyrimidin-6(7H)-one was prepared by the multicomponent reaction of
2H-pyrido[1,2-a]pyrimidine-2,4(3H)-dione, 2-naphthol and p-nitrobenzaldehyde. The structure of the
compound was confirmed by UV, IR, NMR (1H, 13C), and mass spectroscopic studies. The compound
was further subjected to quantum chemical calculations at the level of Hartree-Fock (HF) method using
Lan2DZ basis set to compute polarizability, hyperpolarizabilities, AIM approach, Natural bond orbital
analysis, complete vibrational assignments, Mulliken charges, spectral analysis and HOMO-LUMO
energies.
Keywords:
Density Functional Theory (DFT), Natural Bond Orbital (NBO), Nonlinear Optical (NLO), Molecular Electrostatic Potential (MESP), Atom in Molecule (AIM), pyridopyrimidines.
Graphical Abstract
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