Shock synthesis of lanthanum-III-pernitride

O. Tschauner*, S. N. Luo, Y. J. Chen, A. Mcdowell, J. Knight, S. M. Clark

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Lanthanum-III-pernitride is unique amongst pernitrides because of the seemingly misfit charge balance and stoichiometry. La+3N2 has been predicted to be stabilized by resonance between two mesomeric states of bonding in the pernitride group, which include a remarkable NN single bond limiting state. However, successful synthesis of this compound remained extant. Here, we report synthesis of LaN2 through shock-driven decomposition of lanthanum nitrate. The result is noteworthy as a first quantitative measure of the stability of NN single bonds in solids formed at GPa-level pressure and with respect to a possible cross-over of redox potentials in the nitrogen- and oxygen-systems at high pressure and temperature.

Original languageEnglish
Pages (from-to)202-207
Number of pages6
JournalHigh Pressure Research
Issue number1
Publication statusPublished - 1 Mar 2013
Externally publishedYes


  • Crystallography
  • Diffraction
  • Geophysics
  • Landau theory
  • Shock


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