data_global
_amcsd_formula_title 'Cu2 La2 O6 Sr'
loop_
_publ_author_name
'Nguyen N'
'Er-Rakho L'
'Michel C'
'Choisnet J'
'Raveau B'
_journal_name_full 'Materials Research Bulletin'
_journal_volume 15 
_journal_year 1980
_journal_page_first 891
_journal_page_last 897
_publ_section_title
;
 Intercroissance de feuilletes "Perovskites lacunaires" et de feuillets
 type chlorure de sodium: les oxydes La2-x A1+x Cu2 O6-x/2 (A = Ca, Sr)
 _cod_database_code 1001291
;
_database_code_amcsd 0014285
_chemical_formula_sum '(La2 Sr) Cu2 O6'
_cell_length_a 3.865
_cell_length_b 3.865
_cell_length_c 19.887
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 297.076
_exptl_crystal_density_diffrn      6.579
_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
La1   0.00000   0.00000   0.00000   0.50000
Sr1   0.00000   0.00000   0.00000   0.50000
La2   0.00000   0.00000   0.17830   0.75000
Sr2   0.00000   0.00000   0.17830   0.25000
Cu1   0.00000   0.00000   0.59130   1.00000
O1   0.00000   0.50000   0.08400   1.00000
O2   0.00000   0.00000   0.70500   1.00000