title: Growth and characterization of thiosemicarbazide hydrochloride: a semiorganic NLO material.
abstract: Thiosemicarbazide hydrochloride (TSCHCL) was synthesized by mixing thiosemicarbazide and hydrochloride in 1:1 molar ratio in double distilled water. Single crystals of TSCHCL were grown by slow evaporation at room temperature and were characterized by single crystal X-ray diffraction study to determine the molecular structure and by FT-IR, (1)H and (13)C NMR spectral analyses to confirm the synthesized compound. Thermogravimetric and differential thermal analyses reveal the thermal stability of the crystal. The transmission spectrum of TSCHCL showed that the crystal is transparent in the wavelength range 380-1100 nm. High resolution X-ray diffractometry (HRXRD) was employed to evaluate the perfection of the grown crystal. Mechanical properties of the grown crystal were studied using Vickers microhardness test. Second harmonic generation efficiency of the powdered TSCHCL was tested using Nd:YAG laser and is ∼1.5 times that of potassium dihydrogen orthophosphate.
authors.affiliation: Department of Physics, Govt. Arts College for Women, Pudukkottai 622 001, Tamil Nadu, India.
authors.forename: R
authors.initials: R
authors.lastname: Santhakumari
authors.forename: K
authors.initials: K
authors.lastname: Ramamurthi
authors.forename: R Ramesh
authors.initials: RR
authors.lastname: Babu
authors.forename: Helen Stoeckli
authors.initials: HS
authors.lastname: Evans
authors.forename: G
authors.initials: G
authors.lastname: Bhagavannarayana
authors.forename: R
authors.initials: R
authors.lastname: Hema
mesh_terms: D002621:Chemistry / Q000379:methods*; D003460:Crystallization; D006244:Hardness; D006863:Hydrogen-Ion Concentration; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D055095:Optics and Photonics; D009930:Organic Chemicals / Q000737:chemistry*; D012663:Semicarbazides / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*; D013696:Temperature; D013818:Thermogravimetry / Q000379:methods; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction / Q000379:methods
chemical_list: D009930:Organic Chemicals; D012663:Semicarbazides; D014867:Water; C005151:thiosemicarbazide