data_global
_amcsd_formula_title 'Nd2Ba4Cu2O9'
loop_
_publ_author_name
'Domenges B'
'Abbattista F'
'Michel C'
'Vallino M'
'Barbey L'
'Nguyen N'
'Raveau B'
_journal_name_full 'Journal of Solid State Chemistry'
_journal_volume 106 
_journal_year 1993
_journal_page_first 271
_journal_page_last 281
_publ_section_title
;
 A one-dimensional cuprate closely related to the "0212"-structure: Nd2Ba4Cu2O9
 _cod_database_code 1001569
;
_database_code_amcsd 0013784
_chemical_formula_sum 'Ba4 Nd2 Cu2 O9'
_cell_length_a 12.0717
_cell_length_b 12.0717
_cell_length_c 3.8737
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 564.499
_exptl_crystal_density_diffrn      6.524
_symmetry_space_group_name_H-M 'P -4 n 2'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+y,1/2+x,1/2-z'
  'y,-x,-z'
  '1/2+x,1/2-y,1/2+z'
  '-x,-y,z'
  '1/2-y,1/2-x,1/2-z'
  '-y,x,-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
Ba1   0.11320   0.17610   0.75000
Nd1   0.38790   0.11210   0.25000
Cu1   0.10050   0.39950   0.25000
O1   0.40400   0.90400   0.25000
O2   0.00000   0.00000   0.50000
O3   0.24500   0.25500   0.25000
O4  -0.02600   0.30000   0.25000