#------------------------------------------------------------------------------
#$Date: 2008-01-14 00:15:36 +0200 (Mon, 14 Jan 2008) $
#$Revision: 14 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9007445.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_9007445
_chemical_name 'SrO*2(Al2O3)'
loop_
_publ_author_name
'Boyko E R'
'Wisnyi L G'
_journal_name_full "Acta Crystallographica"
_journal_volume 11
_journal_year 1958
_journal_page_first 444
_journal_page_last 445
_publ_section_title
;
 The optical properties and structures of CaO*2Al2O3 and SrO*2Al2O3
 Locality: synthetic
;
_chemical_formula_sum 'Sr Al4 O7'
_cell_length_a 13.04
_cell_length_b 9.01
_cell_length_c 5.55
_cell_angle_alpha 90
_cell_angle_beta 106.502
_cell_angle_gamma 90
_cell_volume 625.213
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Sr   0.00000   0.81000   0.25000
Al1   0.16900   0.08600   0.29500
Al2   0.12200   0.44100   0.25700
O1   0.00000   0.52600   0.25000
O2   0.11700   0.04800   0.54400
O3   0.12700   0.26000   0.17500
O4   0.18800   0.44700   0.59800