Abstract
Despite many experimental and theoretical studies, the crystal structure of the phase of solid oxygen has not been determined. We performed powder x-ray diffraction experiments and the Rietveld analyses in this study to show that a new arrangement of the monoclinic space group could fit the diffraction patterns of the phase and obtained a structure that consisted of an cluster with 4 molecules. The dependence of the lattice parameters, the molar volume, and the intermolecular distances on the pressure was investigated.
- Received 8 June 2006
DOI:https://doi.org/10.1103/PhysRevLett.97.085503
©2006 American Physical Society