The crystal structure described by CeNiAsO crystallizes in the tetragonal P4/nmm space group. Ce(1) is bonded in a 4-coordinate geometry to four equivalent As(1) and four equivalent O(1) atoms. Ni(1) is bonded to four equivalent As(1) atoms to form a mixture of distorted corner and edge-sharing NiAs4 tetrahedra. As(1) is bonded in a 8-coordinate geometry to four equivalent Ce(1) and four equivalent Ni(1) atoms. O(1) is bonded to four equivalent Ce(1) atoms to form a mixture of corner and edge-sharing OCe4 tetrahedra. is represented by the CIF file [CIF]
data_CeNiAsO
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.015
_cell_length_b   4.015
_cell_length_c   7.907
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   127.437
_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
  Ce  Ce0  1  0.000  0.500  0.845  1.0
  Ce  Ce1  1  0.500  0.000  0.155  1.0
  Ni  Ni2  1  0.000  0.000  0.500  1.0
  Ni  Ni3  1  0.500  0.500  0.500  1.0
  As  As4  1  0.000  0.500  0.351  1.0
  As  As5  1  0.500  0.000  0.649  1.0
  O  O6  1  0.000  0.000  0.000  1.0
  O  O7  1  0.500  0.500  0.000  1.0
[/CIF]
.
The crystal structure described by CeNiAsO crystallizes in the tetragonal P4/nmm space group. Ce(1) is bonded in a 4-coordinate geometry to four equivalent As(1) and four equivalent O(1) atoms. Ni(1) is bonded to four equivalent As(1) atoms to form a mixture of distorted corner and edge-sharing NiAs4 tetrahedra. As(1) is bonded in a 8-coordinate geometry to four equivalent Ce(1) and four equivalent Ni(1) atoms. O(1) is bonded to four equivalent Ce(1) atoms to form a mixture of corner and edge-sharing OCe4 tetrahedra. is represented by the CIF file [CIF]
data_CeNiAsO
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.015
_cell_length_b   4.015
_cell_length_c   7.907
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   127.437
_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
  Ce  Ce0  1  0.000  0.500  0.845  1.0
  Ce  Ce1  1  0.500  0.000  0.155  1.0
  Ni  Ni2  1  0.000  0.000  0.500  1.0
  Ni  Ni3  1  0.500  0.500  0.500  1.0
  As  As4  1  0.000  0.500  0.351  1.0
  As  As5  1  0.500  0.000  0.649  1.0
  O  O6  1  0.000  0.000  0.000  1.0
  O  O7  1  0.500  0.500  0.000  1.0
[/CIF]
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