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Growth, optical, spectral, thermal and mechanical investigations of organic NLO crystal cis-2, 6-bis(4-chlorophenyl)-3, 3-dimethylpiperidin-4-one

Mohanraj V, Ilango S.S., Ponnuswamy S

Abstract: The single crystal of cis-2,6-bis(4-chlorophenyl)-3,3-dimethylpiperidin-4-one (4C3DMPO) has been grown using a slow evaporation technique. 4C3DMPO is a non-centrosymmetric crystal which crystallizes in the orthorhombic system with space group Pna21. Benzene is used as a solvent for the crystal growth based on solubility studies. The mechanical studies, using microhardness methods, have also been carried out. The compound is characterised using UV, FT-IR and NMR spectral studies. Furthermore, the thermal stability of the crystal is established by TG/DTA. The nonlinear optical studies (SHG) of the crystal have been determined using the Kurtz and Perry powder technique and the activity observed is 2.5 times greater than that of KDP.
Keywords: thermal / crystal cis / bis / 4C3DMPO / dimethylpiperidin / chlorophenyl / optical / spectral

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