data_global
_amcsd_formula_title 'Bi0.775 O1.5 Sm0.225'
loop_
_publ_author_name
'Drache M'
'Obbade S'
'Wignacourt J'
'Conflant P'
_journal_name_full 'Journal of Solid State Chemistry'
_journal_volume 142 
_journal_year 1999
_journal_page_first 349
_journal_page_last 359
_publ_section_title
;
 Structural and conductivity properties of Bi(0.775) Ln(0.225) O1.5
 oxide conductors (Ln = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy) with
 rhombohedral Bi-Sr-O type
 _cod_database_code 1004138
;
_database_code_amcsd 0013962
_chemical_formula_sum 'Bi2.325 Sm.675 O4.5'
_cell_length_a 3.9783
_cell_length_b 3.9783
_cell_length_c 27.39099
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 375.434
_exptl_crystal_density_diffrn      8.749
_symmetry_space_group_name_H-M 'R -3 m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '2/3+x,1/3+y,1/3+z'
  '1/3+x,2/3+y,2/3+z'
  'x,x-y,z'
  '2/3+x,1/3+x-y,1/3+z'
  '1/3+x,2/3+x-y,2/3+z'
  'y,x,-z'
  '2/3+y,1/3+x,1/3-z'
  '1/3+y,2/3+x,2/3-z'
  '-x+y,y,z'
  '2/3-x+y,1/3+y,1/3+z'
  '1/3-x+y,2/3+y,2/3+z'
  '-x,-x+y,-z'
  '2/3-x,1/3-x+y,1/3-z'
  '1/3-x,2/3-x+y,2/3-z'
  '-y,-x,z'
  '2/3-y,1/3-x,1/3+z'
  '1/3-y,2/3-x,2/3+z'
  'x-y,-y,-z'
  '2/3+x-y,1/3-y,1/3-z'
  '1/3+x-y,2/3-y,2/3-z'
  'y,-x+y,-z'
  '2/3+y,1/3-x+y,1/3-z'
  '1/3+y,2/3-x+y,2/3-z'
  '-x+y,-x,z'
  '2/3-x+y,1/3-x,1/3+z'
  '1/3-x+y,2/3-x,2/3+z'
  '-x,-y,-z'
  '2/3-x,1/3-y,1/3-z'
  '1/3-x,2/3-y,2/3-z'
  '-y,x-y,z'
  '2/3-y,1/3+x-y,1/3+z'
  '1/3-y,2/3+x-y,2/3+z'
  'x-y,x,-z'
  '2/3+x-y,1/3+x,1/3-z'
  '1/3+x-y,2/3+x,2/3-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Bi1   0.00000   0.00000   0.00000   0.32500
Sm1   0.00000   0.00000   0.00000   0.67500
Bi2   0.00000   0.00000   0.22480   1.00000
O1   0.00000   0.00000   0.30500   1.00000
O2   0.00000   0.00000   0.09300   0.70000
O3   0.00000   0.00000   0.44500   0.55000