The crystal structures of delta and delta* nitrogen

G. W. Stinton, I. Loa, L. F. Lundegaard, M. I. McMahon, Malcolm McMahon

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The crystal structures of the high-pressure delta and delta* phases of nitrogen have been investigated using single-crystal x-ray diffraction. The structure of the delta phase is very similar to isostructural gamma-O-2 and comprises spherically disordered molecules, with a preference for avoiding pointing along the cubic < 100 > directions, and disklike molecules with a uniform distribution of orientations. The structure of the delta* phase is tetragonal and the space group is identified unambiguously as P4(2)/ncm with unit cell parameters of a=8.603(5) angstrom and c=5.685(5) angstrom at 14.5 GPa. The orientations of the partially disordered molecules have been experimentally determined for the first time and are similar to those predicted on the basis of molecular dynamics simulations. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3204074]

Original languageEnglish
Article number104511
Pages (from-to)-
Number of pages7
JournalThe Journal of Chemical Physics
Volume131
Issue number10
DOIs
Publication statusPublished - 14 Sept 2009

Keywords / Materials (for Non-textual outputs)

  • NEUTRON-DIFFRACTION DETERMINATION
  • X-RAY-DIFFRACTION
  • 2ND-ORDER TRANSITION
  • SOLID NITROGEN
  • GAMMA-OXYGEN
  • PHASE
  • GPA
  • N-2
  • SPECTROSCOPY
  • CALIBRATION

Fingerprint

Dive into the research topics of 'The crystal structures of delta and delta* nitrogen'. Together they form a unique fingerprint.

Cite this