High-pressure transformation of N2/O2 mixtures into ionic compounds
Abstract
We report the neutral-ionic transformation of N2/O2 mixtures above 5GPa at 300K . The reaction is photoinduced with a Nd:YAG laser irradiation. The ionic compounds are characterized by Raman and infrared spectroscopic and synchrotron x-ray diffraction measurements. We show by Raman analysis that the NO+NO3- compound can trap a large fraction of O2 molecules, thus forming an O2 clathrate. But no N2 molecule can be included in this nitrosonium nitrate compound. We propose an orthorhombic unit cell with 10 NO+NO3- in it.
- Publication:
-
Physical Review B
- Pub Date:
- August 2006
- DOI:
- 10.1103/PhysRevB.74.064113
- Bibcode:
- 2006PhRvB..74f4113S
- Keywords:
-
- 62.50.+p;
- 64.75.+g;
- 78.30.-j;
- 78.70.Ck;
- High-pressure and shock wave effects in solids and liquids;
- Solubility segregation and mixing;
- phase separation;
- Infrared and Raman spectra;
- X-ray scattering