How Is ZnH2 Synthesized?

ZnH2 can be synthesized through several methods, including the reaction of zinc with hydrogen gas at high temperatures and pressures, or by reducing Zn(II) compounds with a strong reducing agent in the presence of a proton source. One common method involves the reaction of zinc powder with aqueous NaBH4 or LiAlH4 under acidic conditions, which results in the formation of ZnH2 as a white crystalline solid. The purity of the product can be improved through careful purification and characterization techniques such as X-ray diffraction, infrared spectroscopy, and thermogravimetric analysis.