SINGLE CRYSTAL GROWTH, X-RAY STRUCTURE ANALYSIS, OPTICAL BAND GAP, RAMAN SPECTRA, STRAIN TENSOR AND PHOTOLUMINSCENCE PROPERTIES IN [HgCl4]-[R]+AND [ZnCl4]-[R]+ (R = 2-AMINO-5-CHLOROPYRIDINE) HYBRID MATERIALS

Single crystal growth of tetrachloromercurate (II) [HM-1] and tetrachlorozincate (II) [HM-2] with 2-amino-5-chloropyridine has been performed by slow cooling (SC) crystal growth technique of solution growth method. The crystal structures of these hybrid materials have been studied by X-ray diffraction, experimental and computational techniques, which depict that N-Hδ+...Clδ-, Hg...Hgand Cl...Cl interactions are stabilizing the structures in 3D pattern. UV-vis absorption spectra illustrate the change in opticalband gap from 3.01eVto 3.42eV on replacing the metal halide group.Raman and Hyper-Raman tensors calculations were performed based on single crystal X-ray data and the Lagrangian strain tensor calculations show the degree of lattice distortion = 1.794 between [HM-1]and[HM-2].The photoluminescence emission spectra peaks lie in the visible range for both materials.

• Single crystal growth
• structure analysis
• optical Eg
• Raman spectra
• strain tensor and lattice distortion.

• Single crystal growth
• structure analysis
• optical Eg
• Raman spectra
• strain tensor and lattice distortion.