Magnesium nickel hydride is the chemical compound with formula . It is a reddish-brown crystalline solid. It contains 3.6% by weight of hydrogen and has been studied as a potential hydrogen storage medium.
The compound can be obtained by heating magnesium and nickel metal powders in hydrogen.
The intermetallic compound reacts with hydrogen at to yield .
It consists of cations and anions. It is in a form of a monoclinic crystals that transform into the cubic crystals at .