Zirconium(II) hydride, ZrH2 is a molecular chemical compound which has been prepared by laser ablation and isolated at low temperature.[1]

Zirconium(II) hydride has repeatedly been the subject of DiracHartree–Fock relativistic calculation studies, which investigate the stabilities, geometries, and relative energies of hydrides of the formula MH4, MH3, MH2, or MH.

Zirconium(II) hydride has a dihedral (C2v) structure. In zirconium(II) hydride, the formal oxidation states of hydrogen and zirconium are −1 and +2, respectively, because the electronegativity of zirconium is lower than that of hydrogen. The stability of metal hydrides with the formula MH2 (M = Ti-Hf) decreases as the atomic number increases.


  1. ^ Chertihin, George V.; Andrews, Lester (1995). "Reactions of laser-ablated Zr and Hf atoms with hydrogen. Matrix infrared spectra of the MH, MH2, MH3, and MH4 molecules". The Journal of Physical Chemistry. 99 (41): 15004–15010. doi:10.1021/j100041a014. ISSN 0022-3654.

See also