title: Experimental and density functional theory and ab initio Hartree-Fock study on the vibrational spectra of 2-(4-fluorobenzylideneamino)-3-mercaptopropanoic acid.
abstract: 2-(4-Fluorobenzylideneamino)-3-mercaptopropanoic acid (4-FC) was synthesized through the reaction of 4-fluorobenzaldehyde and l-cysteine in refluxing EtOH. Its structure was verified by (1)H NMR, FT-IR and Raman. The ground-state geometries were optimized at B3LYP/6-31G**, B3LYP/6-31G*, HF/6-31G** and HF/6-31G* levels without symmetry constrains, respectively. The vibrational wavenumbers of 4-FC were calculated at same level. The scaled theoretical spectra using B3LYP methods, which are in a good agreement with the experimental ones, are superior to those using HF methods.
authors.affiliation: Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, Hubei University, Wuhan 430062, People's Republic of China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Ye
authors.forename: Min
authors.initials: M
authors.lastname: Ruan
authors.forename: Yuanzhi
authors.initials: Y
authors.lastname: Song
authors.forename: Yue-Ying
authors.initials: YY
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Xie
mesh_terms: D015097:3-Mercaptopropionic Acid / Q000031:analogs & derivatives* / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008968:Molecular Conformation; D015394:Molecular Structure; D009584:Nitrogen / Q000737:chemistry; D016011:Normal Distribution; D012997:Solvents / Q000737:chemistry; D013053:Spectrophotometry / Q000379:methods*; D013055:Spectrophotometry, Infrared / Q000379:methods; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods; D013059:Spectrum Analysis, Raman / Q000379:methods; D013816:Thermodynamics; D014732:Vibration
chemical_list: C524453:2-(4-fluorobenzylideneamino)-3-mercaptopropanoic acid; D012997:Solvents; D015097:3-Mercaptopropionic Acid; D009584:Nitrogen