The structure described by BaNiO2 crystallizes in the orthorhombic Cmcm space group. Ba(1) is bonded in a distorted body-centered cubic geometry to eight equivalent O(1) atoms. Ni(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. O(1) is bonded to four equivalent Ba(1) and two equivalent Ni(1) atoms to form a mixture of distorted corner, edge, and face-sharing OBa4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-73°. is represented by the CIF card [CIF]
data_BaNiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.496
_cell_length_b   5.496
_cell_length_c   4.782
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   116.040
_symmetry_Int_Tables_number   1
_cell_volume   129.771
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ba  Ba0  1  0.654  0.346  0.750  1.0
  Ba  Ba1  1  0.346  0.654  0.250  1.0
  Ni  Ni2  1  0.000  0.000  0.500  1.0
  Ni  Ni3  1  0.000  0.000  0.000  1.0
  O  O4  1  0.138  0.301  0.750  1.0
  O  O5  1  0.862  0.699  0.250  1.0
  O  O6  1  0.699  0.862  0.750  1.0
  O  O7  1  0.301  0.138  0.250  1.0
[/CIF]
.
The structure described by BaNiO2 crystallizes in the orthorhombic Cmcm space group. Ba(1) is bonded in a distorted body-centered cubic geometry to eight equivalent O(1) atoms. Ni(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. O(1) is bonded to four equivalent Ba(1) and two equivalent Ni(1) atoms to form a mixture of distorted corner, edge, and face-sharing OBa4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-73°. is represented by the CIF card [CIF]
data_BaNiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.496
_cell_length_b   5.496
_cell_length_c   4.782
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   116.040
_symmetry_Int_Tables_number   1
_cell_volume   129.771
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ba  Ba0  1  0.654  0.346  0.750  1.0
  Ba  Ba1  1  0.346  0.654  0.250  1.0
  Ni  Ni2  1  0.000  0.000  0.500  1.0
  Ni  Ni3  1  0.000  0.000  0.000  1.0
  O  O4  1  0.138  0.301  0.750  1.0
  O  O5  1  0.862  0.699  0.250  1.0
  O  O6  1  0.699  0.862  0.750  1.0
  O  O7  1  0.301  0.138  0.250  1.0
[/CIF]
.