data_global
_amcsd_formula_title 'Ba H2 Nb6 O17'
loop_
_publ_author_name
'Nedjar R'
'Borel M'
_journal_name_full 'Materials Research Bulletin'
_journal_volume 23 
_journal_year 1988
_journal_page_first 497
_journal_page_last 500
_publ_section_title
;
 Ba (Nb3O8)2 (H2 O): a novel lamellar niobate
 _cod_database_code 1001419
;
_database_code_amcsd 0014325
_chemical_formula_sum 'Nb6 Ba O17'
_cell_length_a 8.62
_cell_length_b 21.61
_cell_length_c 3.811
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 709.906
_exptl_crystal_density_diffrn      4.523
_symmetry_space_group_name_H-M 'I m m m'
loop_
_space_group_symop_operation_xyz
  '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'
  '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'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Nb1   0.18600   0.36800   0.00000
Nb2   0.50000   0.23200   0.00000
Ba1   0.00000   0.00000   0.00000
O1   0.15000   0.36000   0.50000
O2   0.34000   0.43000   0.00000
O3   0.34000   0.30000   0.00000
O4   0.00000   0.29000   0.00000
O5   0.00000   0.43000   0.00000
O6   0.00000   0.50000   0.50000