The material structure described by Co3NiO8 is Rutile-derived structured and crystallizes in the hexagonal P6_3mc space group. Co(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form CoO6 octahedra that share corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. Ni(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form NiO6 octahedra that share corners with six equivalent Co(1)O6 octahedra and edges with three equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Co(1) and one Ni(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Co(1) and one Ni(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to three equivalent Co(1) atoms. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to three equivalent Co(1) atoms. is represented by the CIF card [CIF]
data_Co3NiO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.595
_cell_length_b   5.595
_cell_length_c   8.525
_cell_angle_alpha   89.988
_cell_angle_beta   90.006
_cell_angle_gamma   120.001
_symmetry_Int_Tables_number   1
_cell_volume   231.067
_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
  Co  Co0  1  0.168  0.832  0.208  1.0
  Co  Co1  1  0.168  0.336  0.208  1.0
  Co  Co2  1  0.664  0.832  0.208  1.0
  Co  Co3  1  0.336  0.168  0.708  1.0
  Co  Co4  1  0.832  0.664  0.708  1.0
  Co  Co5  1  0.832  0.168  0.708  1.0
  Ni  Ni6  1  0.333  0.667  0.483  1.0
  Ni  Ni7  1  0.667  0.333  0.983  1.0
  O  O8  1  0.166  0.834  0.604  1.0
  O  O9  1  0.040  0.520  0.341  1.0
  O  O10  1  0.333  0.667  0.094  1.0
  O  O11  1  1.000  1.000  0.323  1.0
  O  O12  1  0.000  1.000  0.823  1.0
  O  O13  1  0.166  0.331  0.604  1.0
  O  O14  1  0.480  0.960  0.341  1.0
  O  O15  1  0.480  0.520  0.341  1.0
  O  O16  1  0.331  0.166  0.104  1.0
  O  O17  1  0.669  0.834  0.604  1.0
  O  O18  1  0.520  0.480  0.841  1.0
  O  O19  1  0.520  0.040  0.841  1.0
  O  O20  1  0.667  0.333  0.594  1.0
  O  O21  1  0.834  0.669  0.104  1.0
  O  O22  1  0.960  0.480  0.841  1.0
  O  O23  1  0.834  0.166  0.104  1.0
[/CIF]
.
The material structure described by Co3NiO8 is Rutile-derived structured and crystallizes in the hexagonal P6_3mc space group. Co(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form CoO6 octahedra that share corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. Ni(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form NiO6 octahedra that share corners with six equivalent Co(1)O6 octahedra and edges with three equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Co(1) and one Ni(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Co(1) and one Ni(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to three equivalent Co(1) atoms. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to three equivalent Co(1) atoms. is represented by the CIF card [CIF]
data_Co3NiO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.595
_cell_length_b   5.595
_cell_length_c   8.525
_cell_angle_alpha   89.988
_cell_angle_beta   90.006
_cell_angle_gamma   120.001
_symmetry_Int_Tables_number   1
_cell_volume   231.067
_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
  Co  Co0  1  0.168  0.832  0.208  1.0
  Co  Co1  1  0.168  0.336  0.208  1.0
  Co  Co2  1  0.664  0.832  0.208  1.0
  Co  Co3  1  0.336  0.168  0.708  1.0
  Co  Co4  1  0.832  0.664  0.708  1.0
  Co  Co5  1  0.832  0.168  0.708  1.0
  Ni  Ni6  1  0.333  0.667  0.483  1.0
  Ni  Ni7  1  0.667  0.333  0.983  1.0
  O  O8  1  0.166  0.834  0.604  1.0
  O  O9  1  0.040  0.520  0.341  1.0
  O  O10  1  0.333  0.667  0.094  1.0
  O  O11  1  1.000  1.000  0.323  1.0
  O  O12  1  0.000  1.000  0.823  1.0
  O  O13  1  0.166  0.331  0.604  1.0
  O  O14  1  0.480  0.960  0.341  1.0
  O  O15  1  0.480  0.520  0.341  1.0
  O  O16  1  0.331  0.166  0.104  1.0
  O  O17  1  0.669  0.834  0.604  1.0
  O  O18  1  0.520  0.480  0.841  1.0
  O  O19  1  0.520  0.040  0.841  1.0
  O  O20  1  0.667  0.333  0.594  1.0
  O  O21  1  0.834  0.669  0.104  1.0
  O  O22  1  0.960  0.480  0.841  1.0
  O  O23  1  0.834  0.166  0.104  1.0
[/CIF]
.