Structural studies and physicochemical properties of l-valine hydrochloride monohydrate

Abstract

Nonlinear optical material L-valine hydrochloride monohydrate (VHM) was synthesized and single crystals were grown by slow evaporation of its aqueous solution at a constant temperature (42 °C). The crystal structure of VHM was redetermined by single crystal X-ray diffraction analysis. The physicochemical properties of the grown crystal were characterized by thermal and optical analysis and a measurement of hardness. The second harmonic generation efficiency of VHM was investigated by a powder method and it was found to be 0.3 times that of potassium dihydrogen phosphate (KDP).