#------------------------------------------------------------------------------
#$Date: 2008-01-26 15:05:32 +0200 (Sat, 26 Jan 2008) $
#$Revision: 19 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9009238.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_9009238
_chemical_name 'SiO2'
loop_
_publ_author_name
'Haines J'
'Leger J M'
'Gorelli F'
'Hanfland M'
_journal_name_full "Physical Review Letters"
_journal_volume 87
_journal_year 2001
_journal_page_first 155503
_journal_page_last 155503
_publ_section_title
;
 Crystalline post-quartz phase in silica at high pressure
 Sample at ambient conditions
;
_chemical_formula_sum 'Si O2'
_cell_length_a 7.66
_cell_length_b 4.10
_cell_length_c 5.03
_cell_angle_alpha 90
_cell_angle_beta 117.9
_cell_angle_gamma 90
_cell_volume 139.610
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Si1   0.50000   0.00000   0.00000
Si2   0.16600   0.50090   0.96880
O1   0.05350   0.24290   0.65110
O2   0.72080   0.24180   0.18640
O3   0.38730   0.23730   0.65970