title: Structure and vibrational spectra of 6-(4-fluorobenzoyl)-3-(2-(4-methylpiperazin-1-yl)-2-oxoethyl)benzo[d]thiazol-2(3H)-one molecule.
abstract: The molecular structure, conformational stability and vibrational frequencies of 6-(4-fluorobenzoyl)-3-(2-(4-methylpiperazin-1-yl)-2-oxoethyl)benzo[d]thiazol-2(3H)-one (abbreviated as FMOT) molecule in the ground state were calculated by DFT (B3LYP) and HF methods using different basis sets. The solid-state FT-IR spectrum was measured and compared with calculated values. FMOT was found to have four different stable conformations. The comparison of the theoretical and experimental geometries of the title compound indicated that the X-ray parameters fairly well agree with the theoretically obtained values for the most stable conformer. Energy gap of the molecule was found using HOMO and LUMO calculation, hence the less band gap, which seems to be more stable. The observed and calculated vibrational frequencies are found to be in good agreement.
authors.affiliation: Department of Physics, Faculty of Arts & Sciences, Eskişehir Osmangazi University, 26480 Eskişehir, Turkey. eroltasal@gmail.com
authors.forename: Erol
authors.initials: E
authors.lastname: Taşal
authors.forename: Mustafa
authors.initials: M
authors.lastname: Kumalar
mesh_terms: D052160:Benzothiazoles / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D010879:Piperazines / Q000737:chemistry*; D011789:Quantum Theory; D012399:Rotation; D017550:Spectroscopy, Fourier Transform Infrared; D013816:Thermodynamics; D014732:Vibration
chemical_list: D052160:Benzothiazoles; D010879:Piperazines