• JEEVARATHINAM C
• G.V.Pandian

The thiosemicarbazone of 4-Chlorobenzaldehyde and Thiosemicarbazone of benzaldehyde is an interesting of organic compound in the crystalline nature. The crystal which is grown slow evaporation method from the solvent methanol. The harvested crystals were purified by repeated recrystallization. FT-IR spectroscopic analyze was carried out on the growth recognize the fundamental function group. Optical absorption studied illustrate low absorption in the entire UV and visible spectral. The UV-Visible Spectra are confirms the optical transparency. This is more helpful to use these crystals in option applications. The harvested crystals Thiosemicarbazone of 4-Chlorobenzaldehyde and Thiosemicarbazone of benzaldehyde was characterized by proton nuclear magnetic resonance and of 13C NMR spectra which show the molecular structure of the crystals. Its thermal stability for analysis in the crystal by TGA and DSC. The TGA and DSC confirm the decomposition of the sample at 210oC.It further confirms the grown crystal Thiosemicarbazone of 4-Chlorobenzaldehyde and Thiosemicarbazone of benzaldehyde is thermally stable up to 210oC.The frequencies was identified in the crystal by dielectric properties. Second harmonic generation efficiency of the powdered Thiosemicarbazone of 4-Chlorobenzaldehyde and Thiosemicarbazone of benzaldehyde and was tested using Nd: YAG laser and it is found to be 18 times higher than that of urea.

solution growth, slow evaporation technique, spectral characterization, Thermal analysis, SHG efficiency

"Preparation, Growth, Spectroscopic and Thermal Characterization of Thiosemicarbazone of 4-Chlorobenzaldehyde and Benzaldehyde", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.397-409, April-2019, Available :http://www.jetir.org/papers/JETIR1904459.pdf

"Preparation, Growth, Spectroscopic and Thermal Characterization of Thiosemicarbazone of 4-Chlorobenzaldehyde and Benzaldehyde", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp397-409, April-2019, Available at : http://www.jetir.org/papers/JETIR1904459.pdf