The compound described by NaMgNiO2 crystallizes in the monoclinic P2/m space group. Na(1) is bonded to two equivalent Na(1), four equivalent Mg(1), and two equivalent O(1) atoms to form a mixture of distorted edge and corner-sharing NaNa2Mg4O2 hexagonal bipyramids. Mg(1) is bonded in a square co-planar geometry to four equivalent Na(1) and four equivalent O(1) atoms. Ni(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. O(1) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), two equivalent Mg(1), and two equivalent Ni(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_NaMgNiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.910
_cell_length_b   6.417
_cell_length_c   6.240
_cell_angle_alpha   75.378
_cell_angle_beta   62.190
_cell_angle_gamma   63.161
_symmetry_Int_Tables_number   1
_cell_volume   91.828
_cell_formula_units_Z   1
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
  Na  Na0  1  0.500  0.500  0.500  1.0
  Mg  Mg1  1  0.500  1.000  0.500  1.0
  Ni  Ni2  1  1.000  0.000  0.000  1.0
  O  O3  1  0.208  0.041  0.251  1.0
  O  O4  1  0.792  0.959  0.749  1.0
[/CIF]
.
The compound described by NaMgNiO2 crystallizes in the monoclinic P2/m space group. Na(1) is bonded to two equivalent Na(1), four equivalent Mg(1), and two equivalent O(1) atoms to form a mixture of distorted edge and corner-sharing NaNa2Mg4O2 hexagonal bipyramids. Mg(1) is bonded in a square co-planar geometry to four equivalent Na(1) and four equivalent O(1) atoms. Ni(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. O(1) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), two equivalent Mg(1), and two equivalent Ni(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_NaMgNiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.910
_cell_length_b   6.417
_cell_length_c   6.240
_cell_angle_alpha   75.378
_cell_angle_beta   62.190
_cell_angle_gamma   63.161
_symmetry_Int_Tables_number   1
_cell_volume   91.828
_cell_formula_units_Z   1
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
  Na  Na0  1  0.500  0.500  0.500  1.0
  Mg  Mg1  1  0.500  1.000  0.500  1.0
  Ni  Ni2  1  1.000  0.000  0.000  1.0
  O  O3  1  0.208  0.041  0.251  1.0
  O  O4  1  0.792  0.959  0.749  1.0
[/CIF]
.