The material described by NaMgNiO2 crystallizes in the triclinic P1 space group. Na(1) is bonded in a 4-coordinate geometry to one O(1) and three equivalent O(2) atoms. Mg(1) is bonded to one O(1) and three equivalent O(2) atoms to form corner-sharing MgO4 tetrahedra. Ni(1) is bonded in a distorted trigonal planar geometry to three equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Mg(1), and three equivalent Ni(1) atoms to form distorted corner-sharing ONaMgNi3 trigonal pyramids. In the second O site, O(2) is bonded in a 6-coordinate geometry to three equivalent Na(1) and three equivalent Mg(1) atoms. is represented by the CIF file [CIF]
data_NaMgNiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.240
_cell_length_b   3.356
_cell_length_c   6.742
_cell_angle_alpha   91.703
_cell_angle_beta   77.168
_cell_angle_gamma   63.431
_symmetry_Int_Tables_number   1
_cell_volume   63.242
_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  0.379  0.750  0.457  1.0
  Mg  Mg1  1  0.464  0.257  0.821  1.0
  Ni  Ni2  1  0.924  0.998  0.138  1.0
  O  O3  1  0.260  0.371  0.138  1.0
  O  O4  1  0.869  0.562  0.708  1.0
[/CIF]
.
The material described by NaMgNiO2 crystallizes in the triclinic P1 space group. Na(1) is bonded in a 4-coordinate geometry to one O(1) and three equivalent O(2) atoms. Mg(1) is bonded to one O(1) and three equivalent O(2) atoms to form corner-sharing MgO4 tetrahedra. Ni(1) is bonded in a distorted trigonal planar geometry to three equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Mg(1), and three equivalent Ni(1) atoms to form distorted corner-sharing ONaMgNi3 trigonal pyramids. In the second O site, O(2) is bonded in a 6-coordinate geometry to three equivalent Na(1) and three equivalent Mg(1) atoms. is represented by the CIF file [CIF]
data_NaMgNiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.240
_cell_length_b   3.356
_cell_length_c   6.742
_cell_angle_alpha   91.703
_cell_angle_beta   77.168
_cell_angle_gamma   63.431
_symmetry_Int_Tables_number   1
_cell_volume   63.242
_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  0.379  0.750  0.457  1.0
  Mg  Mg1  1  0.464  0.257  0.821  1.0
  Ni  Ni2  1  0.924  0.998  0.138  1.0
  O  O3  1  0.260  0.371  0.138  1.0
  O  O4  1  0.869  0.562  0.708  1.0
[/CIF]
.