Abstract
Semiorganic non-linear optical single crystals of urea mercuric chloride were grown from aqueous solution using slow evaporation method. The grown crystals were subjected to different characterisations Viz., XRD, FTIR, UV, TGA and powder SHG. XRD study reveals that the crystal belongs to triclinic system with the space group P1. The vibrational frequencies of various functional groups have been derived from FTIR spectrum. Thermal stability of the grown crystal was investigated by TG-DTA studies and it is observed that the title compound is thermally stable up to 170 °C. Optical absorption study has been carried out and a good transparency in the entire visible region is observed with the lower cut-off wavelength of 245 nm. Kurtz powder method was employed to explore the non-linear optical characteristics of the grown crystal.
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