Study on the structure, vibrational analysis and molecular docking of fluorophenyl derivatives using FT-IR and density functional theory computations

Add time:07/13/2019    Source:sciencedirect.com

The density functional calculations were performed at the B3LYP/6-311++G (5D, 7F) level to find the geometrical parameters, vibrational wavenumbers and various molecular properties of three fluorophenyl derivatives, methyl 4,4″-difluoro-5′-methoxy-1,1':3′,1″-terphenyl-4′-carboxylate (MDFMTPC), 2,2'-(disulfanediyl)bis[4,6-(4-fluorophenyl)pyrimidine] (DFFPPY) and (6Z)-3,5′-bis(4-fluorophenyl)-6-(1-hydroxyethylidene)cyclohex-2-en-1-one (FPHYCY). The phenyl ring CC, CO and CH stretching modes produces VCD spectrum and these modes are efficient configuration markers. Using natural bond orbital analysis the stability of the molecules due to hyper-conjugative interactions were discussed. From the HOMO and LUMO energies, the chemical descriptors are compared for the title compounds. The first hyperpolarizabilities of MDFMTPC, DFFPPY and FPHYCY are respectively, 41.08, 69.27 and 38.38 times that of urea. Molar refractivity values are increasing in the order, FPHYCY > MDFMTPC > DFFPPY and this is responsible for the binding nature of the molecular assembly and can be used for the cure of different diseases. PASS analysis of the title compounds predicts chlordecone reductase inhibitor activity for MDFMTPC, thioredoxin inhibitor activity for DFFPPY and testosterone 17beta-dehydrogenase (NADP+) inhibitor activity for FPHYCY. Docking studies reveal that MDFMTPC, DFFPPY and FPHYCY can be lead compounds for developing new anti-cancerous, anti-tumor, prostate cancer drugs. Using Hirshfeld surface and 2D-finger print plots, the type and nature of intermolecular interactions were reported.

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