data_2002505
_chemical_name_systematic          'Barium nickel diyttrium oxide'
_chemical_formula_structural       'Ba Ni Y2 O5'
_chemical_formula_sum              'Ba Ni O5 Y2'
_publ_section_title
;
Zur Kenntnis von Ba Pt La2 O5 und Ba Ni Y2 O5
;
loop_
_publ_author_name
  'Mueller-Buschbaum, Hk'
  'Schlueter, D'
_journal_name_full                 'Journal of the Less-Common Metals'
_journal_volume                    166
_journal_year                      1990
_journal_page_first                L7
_journal_page_last                 L9
_cell_length_a                     3.7610(8)
_cell_length_b                     5.7633(11)
_cell_length_c                     11.3167(30)
_cell_angle_alpha                  90
_cell_angle_beta                   90
_cell_angle_gamma                  90
_cell_volume                       245.3
_cell_formula_units_Z              2
_symmetry_space_group_name_H-M     'I m m m'
_symmetry_Int_Tables_number        71
_symmetry_cell_setting             orthorhombic
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  'x,-y,-z'
  '-x,y,-z'
  '-x,-y,z'
  '-x,-y,-z'
  '-x,y,z'
  'x,-y,z'
  'x,y,-z'
  '1/2+x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '1/2-x,1/2-y,1/2+z'
  '1/2-x,1/2-y,1/2-z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '1/2+x,1/2+y,1/2-z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  Ba2+   2.000
  Ni2+   2.000
  Y3+    3.000
  O2-   -2.000
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
  Ba1   Ba2+   2 a 0. 0. 0. 1.  0 d
  Ni1   Ni2+   2 c 0.5 0.5 0. 1.  0 d
  Y1    Y3+    4 j 0.5 0. 0.7025(1) 1.  0 d
  O1    O2-    8 l 0. 0.7598(12) 0.3512(5) 1.  0 d
  O2    O2-    2 d 0.5 0. 0.5 1.  0 d
_refine_ls_R_factor_all            0.043