data_global
_amcsd_formula_title 'Ba2.4 Cu1.8 La3.6 O9.6'
loop_
_publ_author_name
'Michel C'
'Er-Rakho L'
'Raveau B'
_journal_name_full 'Journal of Solid State Chemistry'
_journal_volume 39 
_journal_year 1981
_journal_page_first 161
_journal_page_last 167
_publ_section_title
;
 Les oxydes La4-2x Ba2+2x Cu2-x O10-2x: Une structure inedite
 constituee de groupements Cu O4 carres plans isoles
 _cod_database_code 1001097
;
_database_code_amcsd 0013419
_chemical_formula_sum '(La1.8 Ba1.2) Cu.9 O4.8'
_cell_length_a 6.862
_cell_length_b 6.862
_cell_length_c 5.871
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 276.448
_exptl_crystal_density_diffrn      6.593
_symmetry_space_group_name_H-M 'P 4/m b m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2-y,1/2-x,z'
  '1/2+y,1/2+x,-z'
  'y,-x,-z'
  '-y,x,z'
  '1/2+x,1/2-y,z'
  '1/2-x,1/2+y,-z'
  'x,y,-z'
  '-x,-y,z'
  '1/2+y,1/2+x,z'
  '1/2-y,1/2-x,-z'
  '-y,x,-z'
  'y,-x,z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
La1   0.50000   0.50000   0.50000   0.60000
La2   0.17300   0.67300   0.00000   0.60000
Ba1   0.50000   0.50000   0.50000   0.40000
Ba2   0.17300   0.67300   0.00000   0.40000
Cu1   0.50000   0.00000   0.50000   0.90000
O1   0.00000   0.00000   0.00000   1.00000
O2   0.36500   0.86500   0.27600   0.95000