Growth, spectroscopic and physicochemical properties of bis mercury ferric chloride tetra thiocyanate: A nonlinear optical crystal

► MFCTC is a bi-metal-halogen thiocyanate family crystalline material. ► It possesses broad optical transparency from 338 to 1200 nm. ► It has good physicochemical properties suitable for second harmonic generation. ► It is thermally stable up to 234.31 °C, which is superior to TMTM (199.06 °C). ► The second harmonic conversion efficiency of MFCTC is found to be better than KDP.