Corresponding Author

Ibrahim, M.

Document Type

Original Article

Subject Areas

Mathematics, Statistics, Computer Science, Physics and Astronomy


Optical band gap; FT-IR absorption and X-ray diffraction


Heterocyclic compound of (4-oxothiazolidin-2-ylidene) acetonitrile was prepared in powder form. The crystallinenature of the prepared sample was checked by X- ray diffraction (XRD). IR absorption spectra were recorded on aShimadzu 440 infrared spectrophotometer (cm-1) using the KBr technique (Shimadzu, Japan). Reflection spectraof the powder sample were obtained in the wavelength range (200-2500 nm) at room temperature using spectrophotometer.Absorption and transmission spectra of the prepared sample were obtained in different solvents inthe wavelength range (190-1100nm).The solvent used are acetone, dimethyformamid (D.M.F.) and glycerol. Themeasurements were carried out at room temperature using (JENWAY 6405 UV/VIS) spectrophotometer. The opticalenergy gap which is the difference between lowest unoccupied molecular orbital (LUMO) and highest occupiedmolecular orbital (HOMO) was estimated. The effect of the solvent dielectric constant on optical band gap wasdiscussed.

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