The crystal structure described by Mg(BiO2)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(3), and one O(7) atom. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(7), and one O(8) atom to form distorted edge-sharing BiO6 octahedra. In the second Bi site, Bi(2) is bonded in a trigonal non-coplanar geometry to one O(2), one O(6), and one O(8) atom. In the third Bi site, Bi(3) is bonded to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(8) atom to form edge-sharing BiO6 octahedra. In the fourth Bi site, Bi(4) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form distorted edge-sharing BiO6 octahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Bi(1), and one Bi(3) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Bi(1), one Bi(2), and one Bi(4) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Mg(1), one Bi(3), and one Bi(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Bi(1), one Bi(3), and one Bi(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Bi(1), one Bi(3), and one Bi(4) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Bi(2), one Bi(3), and one Bi(4) atom. In the seventh O site, O(7) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Bi(1), and one Bi(4) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Bi(1), one Bi(2), and one Bi(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg(BiO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.936
_cell_length_b   7.272
_cell_length_c   7.157
_cell_angle_alpha   60.168
_cell_angle_beta   63.420
_cell_angle_gamma   58.354
_symmetry_Int_Tables_number   1
_cell_volume   257.943
_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
  Mg  Mg0  1  0.064  0.033  0.376  1.0
  Bi  Bi1  1  0.476  0.992  0.531  1.0
  Bi  Bi2  1  0.593  0.440  0.007  1.0
  Bi  Bi3  1  0.992  0.504  0.501  1.0
  Bi  Bi4  1  0.475  0.508  0.520  1.0
  O  O5  1  0.195  0.262  0.324  1.0
  O  O6  1  0.767  0.230  0.272  1.0
  O  O7  1  0.189  0.723  0.325  1.0
  O  O8  1  0.240  0.291  0.694  1.0
  O  O9  1  0.725  0.726  0.332  1.0
  O  O10  1  0.772  0.298  0.741  1.0
  O  O11  1  0.254  0.815  0.621  1.0
  O  O12  1  0.757  0.679  0.755  1.0
[/CIF]
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The crystal structure described by Mg(BiO2)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(3), and one O(7) atom. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(7), and one O(8) atom to form distorted edge-sharing BiO6 octahedra. In the second Bi site, Bi(2) is bonded in a trigonal non-coplanar geometry to one O(2), one O(6), and one O(8) atom. In the third Bi site, Bi(3) is bonded to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(8) atom to form edge-sharing BiO6 octahedra. In the fourth Bi site, Bi(4) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form distorted edge-sharing BiO6 octahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Bi(1), and one Bi(3) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Bi(1), one Bi(2), and one Bi(4) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Mg(1), one Bi(3), and one Bi(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Bi(1), one Bi(3), and one Bi(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Bi(1), one Bi(3), and one Bi(4) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Bi(2), one Bi(3), and one Bi(4) atom. In the seventh O site, O(7) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Bi(1), and one Bi(4) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Bi(1), one Bi(2), and one Bi(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg(BiO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.936
_cell_length_b   7.272
_cell_length_c   7.157
_cell_angle_alpha   60.168
_cell_angle_beta   63.420
_cell_angle_gamma   58.354
_symmetry_Int_Tables_number   1
_cell_volume   257.943
_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
  Mg  Mg0  1  0.064  0.033  0.376  1.0
  Bi  Bi1  1  0.476  0.992  0.531  1.0
  Bi  Bi2  1  0.593  0.440  0.007  1.0
  Bi  Bi3  1  0.992  0.504  0.501  1.0
  Bi  Bi4  1  0.475  0.508  0.520  1.0
  O  O5  1  0.195  0.262  0.324  1.0
  O  O6  1  0.767  0.230  0.272  1.0
  O  O7  1  0.189  0.723  0.325  1.0
  O  O8  1  0.240  0.291  0.694  1.0
  O  O9  1  0.725  0.726  0.332  1.0
  O  O10  1  0.772  0.298  0.741  1.0
  O  O11  1  0.254  0.815  0.621  1.0
  O  O12  1  0.757  0.679  0.755  1.0
[/CIF]
.