Growth and Characterization of Organo-metallic Single Crystals of (HCLPTM) Heptachloro (L-Proline) TetraMercury (II)

A new promising organo-metallic nonlinear optical material, was synthesized and single crystals of HCLPTM were grown from solution by slow evaporation technique. Single-crystal X-ray diffractometer was utilized to measure unit cell parameters and to confirm lattice parameter. The optical transmittance window and the lower cutoff wavelength of the HCLPTM have been identified by UV–Vis–NIR studies. The modes of vibration of different molecular groups present in the sample were identified by the FTIR spectral analysis. The mechanical strength of the crystal was analyzed by Vickers hardness test. The second harmonic generation (SHG) efficiency was estimated using the modified Kurtz–Perry powder test and was found to be 2.5 times that of KDP.