NdHO, a novel oxyhydride

Marius Widerøe, Helmer Fjellvåg, Truls Norby, Finn Willy Poulsen, Rolf W. Berg

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A new metal oxyhydride; neodymium oxyhydride, NdHO, has been synthesized from a reactant mixture of metal hydride (CaH2 or NdH3) and neodymium oxide(Nd2O3). The unit cell dimensions decrease smoothly in the series from LaHO, CeHO, PrHO to NdHO, in line with the lanthanide contraction. The crystal structure of NdHO is described on the basis of Rietveld refinement on neutron powder diffraction data: Space group: P4/nmm (no. 129,D4h 7 ). Axis lengths: a¼7.8480(5) A˚,c¼5.5601(8) A˚. Volume: V¼342.46(6) ˚A3. The tetragonal structure is derived from the fluorite structure, showing complete ordering of hydride and oxide ions over the anion sublattice. The formation of NdHO was further substantiated by Raman spectroscopy.
Original languageEnglish
JournalJournal of Solid State Chemistry
Pages (from-to)1890-1894
Publication statusPublished - 2011


  • Neodymium oxyhydride
  • Crystal structure
  • Chemical compound:NdHO

Cite this

Widerøe, M., Fjellvåg, H., Norby, T., Poulsen, F. W., & Berg, R. W. (2011). NdHO, a novel oxyhydride. Journal of Solid State Chemistry, 184, 1890-1894. https://doi.org/10.1016/j.jssc.2011.05.025