What are Dihydrides? Definition, Examples, and Applications

Dihydride refers to a compound that contains two hydrogen atoms bonded to a central atom, typically a metal or metalloid. These compounds are also known as hydrides or hydrogen compounds.

Dihydrides are commonly found in transition metals and some post-transition metals, where they can form through the reaction of the metal with hydrogen gas (H2) or other reducing agents. The general formula for a dihydride is MH2, where M is the central metal atom.

Some examples of dihydrides include:

* Lithium hydride (LiH2)
* Magnesium hydride (MgH2)
* Calcium hydride (CaH2)
* Titanium dihydride (TiH2)
* Zirconium dihydride (ZrH2)

Dihydrides are important in many areas of chemistry, including catalysis, materials science, and energy storage. They can also be used as reducing agents or as intermediates in the synthesis of other compounds.