Thiosemicarbazone of m-Nitrobenzaldehyde is an interesting organic crystal. It has been grown by slow evaporation solution growth technique (SESGT) using wood alcohol as solvent. The harvested crystals were purified by repeated recrystallization. The working groups of harvested crystals were examined by the Fourier Transform (FT-IR) spectral analysis. The UV-Visible Spectra are confirming the optical transparency. This is more helpful to use these crystals in electro optical applications. The harvested crystal Thiosemicarbazone of m-Nitrobenzaldehyde was characterized by proton nuclear magnetic resonance and of 13 C NMR spectra which show the molecular structure of the crystals. The TGA and DSC confirm the decay of the sample at 210oC. It further confirms the grown crystals Thiosemicarbazone of m-Nitrobenzaldehyde is thermally stable up to 210 o C. The second harmonic generation efficiency of the powdered Thiosemicarbazone of m-Nitrobenzaldehyde and was tested using Nd: YAG laser and it is found to be 5.6 times higher than that of urea.Copy Right, IJAR, 2019,. All rights reserved.
…………………………………………………………………………………………………….... Introduction:-Thiosemicarbazone of m-Nitrobenzaldehyde is an organic crystal plays a significant function in application in optical communication and optical computing devices. In recent year, an intense research work has been carried out to identify a special variety of thermally stable optical material. Organic compounds are often determined by very weak Vander walls and hydrogen bonds and possess a high degree of delocalization. Hence, they are optically more nonlinear than inorganic crystals. The growth methods depend on organic crystal size, hardness, physical body, and large nonlinear optical susceptibilities compared to the inorganic crystals.The slow evaporation solution growth Technique (SESGT) is an important technique because large size, stability, optical crystals are being created by this technique [1][2][3][4][5][6]. The harvested crystals were characterized by FT-IR, UV, 1H and 13C NMR, TGA-DSC, XRD, Micro hardness analysis, and SHG efficiency studied [7][8][9][10][11][12].
ExperimentalAn organic crystal of thiosemicarbazone of m-Nitrobenzaldehyde was prepared by adopting general procedure [13][14][15][16][17]. To a hot solution of Thiosemicarbazone in methanol, a solution of m-Nitrobenzaldehydein methanol was added drop wise during thirty minutes. The mixture was stirred and refluxed for 4 hours. It was filtered and the filtrate was concentrated to half the loudness. Later on a slow evaporation of the concentrate at room temperature,
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