Journal of Molecular Structure p. 356 - 363 (2017)
Update date:2022-08-17
Topics:
Chaudhary, Aniruddh Prasad
Bharti, Shailendra Kumar
Kumar, Santosh
Ved, Kumar
Padam, Kant
A series of novel Quinazolinone derivatives were synthesized and characterized by various spectroscopic techniques. The nature of reactants and products of chemical reactions has been determined using thermodynamic parameters (H, G, S). The TD–DFT calculation of the compound shows that electronic excitations is n→π? in nature and compounds having intramolecular hydrogen bonding is obvious in 1H NMR, 13C NMR, FT–IR measurements and ESP map. In 1H NMR signal of the indolic NH protons appears at 7.26 ppm shows that intramolecular hydrogen is present in compounds. The vibrational analysis designates the presence of intramolecular hydrogen bonding N12–H34?O21 shows in lowering of NH and CO stretching vibrations frequency. The local reactivity descriptors Fukui functions (fk+, fk–), local softness's (sk+, sk–) and electrophilicity indices (ωk+, ωk–) determine the reactive sites within molecule. The computed first hyperpolarizability (β0) found to be 10.2254×10?30esu indicating that the compound is non–linear optical (NLO) material.
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