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Synthesis, growth and characterization of Bis S-benzylisothiouronium tetrachlorido zincate (II) a semiorganic nonlinear optical crystal
Authors:P Hemalatha  V Veeravazhuthi  A Chandramohan
Institution:aDepartment of Physics, PSG College of Technology, Coimbatore 641 004, Tamilnadu, India;bDepartment of Physics, PSG College of Arts and Science, Coimbatore 641 014, Tamilnadu, India;cDepartment of Chemistry, SRMV College of Arts and Science, Coimbatore 641 020, Tamilnadu, India
Abstract:A new semiorganic nonlinear optical (NLO) crystal, Bis S-benzylisothiouronium tetrachloridozincate (II) (SBTTZ), has been synthesized and good optical quality needle shaped single crystals of the title material were grown by solvent evaporation solution growth method at room temperature. Powder X-ray diffraction pattern confirms the crystallinity of the material. Single X-ray diffraction study was carried out to establish the existence of intermolecular hydrogen bonding in the crystal. The UV–Vis–NIR spectrum indicates that the crystal has very good transmittance in the entire visible and near IR regions of the spectrum suggesting the suitability of the material for NLO applications. The presence of various functional groups was confirmed by FT IR spectroscopic technique. The 1H NMR spectrum confirms the molecular structure. The thermal and mechanical stabilities have been confirmed by TG/DTA analyses and Vickers microhardness study respectively. The SHG in the grown crystal was identified by modified Kurtz–Perry method using Nd:YAG laser as the source.
Keywords:A1  Crystal growth  A1  Crystal structure  A1  Hardness  B2  Nonlienar optical material
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