data_global
_amcsd_formula_title 'Bi2 K1.4 O7 Sr1.6'
loop_
_publ_author_name
'Pshirkov J'
'Kazakov S'
'Bougerol-Chaillout C'
'Bordet P'
'Capponi J'
'Putilin S'
'Antipov E'
_journal_name_full 'Journal of Solid State Chemistry'
_journal_volume 144 
_journal_year 1999
_journal_page_first 405
_journal_page_last 408
_publ_section_title
;
 A new layered bismuthate (Sr,K)3 Bi2 O7: synthesis and crystal structure
 _cod_database_code 1009011
;
_database_code_amcsd 0016873
_chemical_formula_sum 'Sr1.6 K1.4 Bi2 O7'
_cell_length_a 4.1549
_cell_length_b 4.1549
_cell_length_c 21.82729
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 376.809
_exptl_crystal_density_diffrn      6.389
_symmetry_space_group_name_H-M 'I 4/m m m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '-y,-x,z'
  '1/2-y,1/2-x,1/2+z'
  'y,x,-z'
  '1/2+y,1/2+x,1/2-z'
  'y,-x,-z'
  '1/2+y,1/2-x,1/2-z'
  '-y,x,z'
  '1/2-y,1/2+x,1/2+z'
  'x,-y,z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,-z'
  '1/2-x,1/2+y,1/2-z'
  'x,y,-z'
  '1/2+x,1/2+y,1/2-z'
  '-x,-y,z'
  '1/2-x,1/2-y,1/2+z'
  'y,x,z'
  '1/2+y,1/2+x,1/2+z'
  '-y,-x,-z'
  '1/2-y,1/2-x,1/2-z'
  '-y,x,-z'
  '1/2-y,1/2+x,1/2-z'
  'y,-x,z'
  '1/2+y,1/2-x,1/2+z'
  '-x,y,z'
  '1/2-x,1/2+y,1/2+z'
  'x,-y,-z'
  '1/2+x,1/2-y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Sr1   0.00000   0.00000   0.50000   1.00000
Sr2   0.00000   0.00000   0.30660   0.30000
K1   0.00000   0.00000   0.30660   0.70000
Bi1   0.00000   0.00000   0.09870   1.00000
O1   0.00000   0.00000   0.00000   1.00000
O2   0.00000   0.50000   0.08500   1.00000
O3   0.00000   0.00000   0.19300   1.00000