The material structure described by Na4Mg(BiO3)2 crystallizes in the monoclinic Cm space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. In the third Na site, Na(3) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(2), and two equivalent O(3) atoms. Mg(1) is bonded in a tetrahedral geometry to one O(1), one O(4), and two equivalent O(3) atoms. Bi(1) is bonded in a 3-coordinate geometry to one O(1), one O(3), and two equivalent O(2) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 7-coordinate geometry to one Na(2), one Na(3), two equivalent Na(1), one Mg(1), and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded to one Na(1), one Na(2), one Na(3), and two equivalent Bi(1) atoms to form a mixture of distorted corner and edge-sharing ONa3Bi2 square pyramids. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(3), one Mg(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(2), two equivalent Na(1), and one Mg(1) atom. is represented by the CIF card [CIF]
data_Na4Mg(BiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.332
_cell_length_b   6.332
_cell_length_c   6.329
_cell_angle_alpha   78.095
_cell_angle_beta   101.905
_cell_angle_gamma   62.630
_symmetry_Int_Tables_number   1
_cell_volume   206.881
_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  0.105  0.187  0.489  1.0
  Na  Na1  1  0.813  0.895  0.489  1.0
  Na  Na2  1  0.467  0.533  0.430  1.0
  Na  Na3  1  0.093  0.907  0.972  1.0
  Mg  Mg4  1  0.662  0.338  0.892  1.0
  Bi  Bi5  1  0.657  0.743  0.009  1.0
  Bi  Bi6  1  0.257  0.343  0.009  1.0
  O  O7  1  0.320  0.680  0.758  1.0
  O  O8  1  0.082  0.559  0.222  1.0
  O  O9  1  0.441  0.918  0.222  1.0
  O  O10  1  0.922  0.366  0.784  1.0
  O  O11  1  0.634  0.078  0.784  1.0
  O  O12  1  0.715  0.285  0.222  1.0
[/CIF]
.
The material structure described by Na4Mg(BiO3)2 crystallizes in the monoclinic Cm space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. In the third Na site, Na(3) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(2), and two equivalent O(3) atoms. Mg(1) is bonded in a tetrahedral geometry to one O(1), one O(4), and two equivalent O(3) atoms. Bi(1) is bonded in a 3-coordinate geometry to one O(1), one O(3), and two equivalent O(2) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 7-coordinate geometry to one Na(2), one Na(3), two equivalent Na(1), one Mg(1), and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded to one Na(1), one Na(2), one Na(3), and two equivalent Bi(1) atoms to form a mixture of distorted corner and edge-sharing ONa3Bi2 square pyramids. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(3), one Mg(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(2), two equivalent Na(1), and one Mg(1) atom. is represented by the CIF card [CIF]
data_Na4Mg(BiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.332
_cell_length_b   6.332
_cell_length_c   6.329
_cell_angle_alpha   78.095
_cell_angle_beta   101.905
_cell_angle_gamma   62.630
_symmetry_Int_Tables_number   1
_cell_volume   206.881
_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  0.105  0.187  0.489  1.0
  Na  Na1  1  0.813  0.895  0.489  1.0
  Na  Na2  1  0.467  0.533  0.430  1.0
  Na  Na3  1  0.093  0.907  0.972  1.0
  Mg  Mg4  1  0.662  0.338  0.892  1.0
  Bi  Bi5  1  0.657  0.743  0.009  1.0
  Bi  Bi6  1  0.257  0.343  0.009  1.0
  O  O7  1  0.320  0.680  0.758  1.0
  O  O8  1  0.082  0.559  0.222  1.0
  O  O9  1  0.441  0.918  0.222  1.0
  O  O10  1  0.922  0.366  0.784  1.0
  O  O11  1  0.634  0.078  0.784  1.0
  O  O12  1  0.715  0.285  0.222  1.0
[/CIF]
.