Preparation and characterization of nonlinear optical crystal materials: Cadmium mercury thiocyanate and its Lewis base adducts

摘要

Cadmium mercury thiocyanate (CdHg(SCN)(4), CMTC) and its two lewis base adducts: cadmium mercury thiocyanate dimethyl-sulphoxide (CdHg(SCN)(4)(H6C2OS)(2), CMTD) and cadmium mercury thiocyanate glycol monomethyl ether (CdHg(SCN)(4)(C3H8O2), CMTG) have been discovered as nonlinear optical (NLO) crystal materials. Their structural, optical and physicochemical properties were characterized by X-ray powder diffraction (X D), infrared spectroscopy, vis/UV/NIR spectra and thermal analysis. It is discovered that their transparency cutoffs lie in the UV region and CMTD crystals possess the shortest cutoff wavelength among the three crystal materials. [References: 9]