Neodymium(III) hydride is an inorganic compound composed of neodymium and hydrogen with a chemical formula NdH3. In this compound, the neodymium atom is in the +3 oxidation state and the hydrogen atoms are −1. It is highly reactive.The 5f3 vs. 4f3. Routes to and properties of highly reactive neodymium(III) hydrocarbyl and hydride complexes Heiko Mauermann, Paul N. Swepston, and Tobin J. Marks Organometallics 1985 4 (1), 200-202 DOI: 10.1021/om00120a036

Preparation Neodymium(III) hydride can be produced by directly reacting neodymium and hydrogen gas: 2Nd + 3H2 → 2NdH3

It can also be made by hydrogenating neodymium(II) hydride.

Properties Neodymium hydride is a blue crystal of the hexagonal system, with unit cell parameters a=0.385 nm, c=0.688 nm.

It reacts with water to form neodymium hydroxide and hydrogen gas:

NdH3 + 3 H2O → Nd(OH)3 + 3 H2

See also Neodymium Hydrogen Lanthanide

References