The material structure described by Mg3Bi2 crystallizes in the cubic Ia-3 space group. Mg(1) is bonded to one Bi(1) and three equivalent Bi(2) atoms to form a mixture of edge and corner-sharing MgBi4 tetrahedra. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to six equivalent Mg(1) atoms. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to six equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg3Bi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.790
_cell_length_b   11.790
_cell_length_c   11.790
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   1261.571
_cell_formula_units_Z   8
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  0.995  0.740  0.980  1.0
  Mg  Mg1  1  0.740  0.760  0.255  1.0
  Mg  Mg2  1  0.505  0.985  0.245  1.0
  Mg  Mg3  1  0.760  0.515  0.520  1.0
  Mg  Mg4  1  0.740  0.980  0.995  1.0
  Mg  Mg5  1  0.760  0.255  0.740  1.0
  Mg  Mg6  1  0.985  0.245  0.505  1.0
  Mg  Mg7  1  0.515  0.520  0.760  1.0
  Mg  Mg8  1  0.980  0.995  0.740  1.0
  Mg  Mg9  1  0.255  0.740  0.760  1.0
  Mg  Mg10  1  0.245  0.505  0.985  1.0
  Mg  Mg11  1  0.520  0.760  0.515  1.0
  Mg  Mg12  1  0.005  0.260  0.020  1.0
  Mg  Mg13  1  0.260  0.240  0.745  1.0
  Mg  Mg14  1  0.495  0.015  0.755  1.0
  Mg  Mg15  1  0.240  0.485  0.480  1.0
  Mg  Mg16  1  0.260  0.020  0.005  1.0
  Mg  Mg17  1  0.240  0.745  0.260  1.0
  Mg  Mg18  1  0.015  0.755  0.495  1.0
  Mg  Mg19  1  0.485  0.480  0.240  1.0
  Mg  Mg20  1  0.020  0.005  0.260  1.0
  Mg  Mg21  1  0.745  0.260  0.240  1.0
  Mg  Mg22  1  0.755  0.495  0.015  1.0
  Mg  Mg23  1  0.480  0.240  0.485  1.0
  Bi  Bi24  1  0.000  0.500  0.000  1.0
  Bi  Bi25  1  0.000  0.000  0.500  1.0
  Bi  Bi26  1  0.500  0.000  0.000  1.0
  Bi  Bi27  1  0.500  0.500  0.500  1.0
  Bi  Bi28  1  0.263  0.750  0.513  1.0
  Bi  Bi29  1  0.237  0.250  0.987  1.0
  Bi  Bi30  1  0.750  0.513  0.263  1.0
  Bi  Bi31  1  0.250  0.987  0.237  1.0
  Bi  Bi32  1  0.513  0.263  0.750  1.0
  Bi  Bi33  1  0.987  0.237  0.250  1.0
  Bi  Bi34  1  0.737  0.250  0.487  1.0
  Bi  Bi35  1  0.763  0.750  0.013  1.0
  Bi  Bi36  1  0.250  0.487  0.737  1.0
  Bi  Bi37  1  0.750  0.013  0.763  1.0
  Bi  Bi38  1  0.487  0.737  0.250  1.0
  Bi  Bi39  1  0.013  0.763  0.750  1.0
[/CIF]
.
The material structure described by Mg3Bi2 crystallizes in the cubic Ia-3 space group. Mg(1) is bonded to one Bi(1) and three equivalent Bi(2) atoms to form a mixture of edge and corner-sharing MgBi4 tetrahedra. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to six equivalent Mg(1) atoms. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to six equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg3Bi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.790
_cell_length_b   11.790
_cell_length_c   11.790
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   1261.571
_cell_formula_units_Z   8
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  0.995  0.740  0.980  1.0
  Mg  Mg1  1  0.740  0.760  0.255  1.0
  Mg  Mg2  1  0.505  0.985  0.245  1.0
  Mg  Mg3  1  0.760  0.515  0.520  1.0
  Mg  Mg4  1  0.740  0.980  0.995  1.0
  Mg  Mg5  1  0.760  0.255  0.740  1.0
  Mg  Mg6  1  0.985  0.245  0.505  1.0
  Mg  Mg7  1  0.515  0.520  0.760  1.0
  Mg  Mg8  1  0.980  0.995  0.740  1.0
  Mg  Mg9  1  0.255  0.740  0.760  1.0
  Mg  Mg10  1  0.245  0.505  0.985  1.0
  Mg  Mg11  1  0.520  0.760  0.515  1.0
  Mg  Mg12  1  0.005  0.260  0.020  1.0
  Mg  Mg13  1  0.260  0.240  0.745  1.0
  Mg  Mg14  1  0.495  0.015  0.755  1.0
  Mg  Mg15  1  0.240  0.485  0.480  1.0
  Mg  Mg16  1  0.260  0.020  0.005  1.0
  Mg  Mg17  1  0.240  0.745  0.260  1.0
  Mg  Mg18  1  0.015  0.755  0.495  1.0
  Mg  Mg19  1  0.485  0.480  0.240  1.0
  Mg  Mg20  1  0.020  0.005  0.260  1.0
  Mg  Mg21  1  0.745  0.260  0.240  1.0
  Mg  Mg22  1  0.755  0.495  0.015  1.0
  Mg  Mg23  1  0.480  0.240  0.485  1.0
  Bi  Bi24  1  0.000  0.500  0.000  1.0
  Bi  Bi25  1  0.000  0.000  0.500  1.0
  Bi  Bi26  1  0.500  0.000  0.000  1.0
  Bi  Bi27  1  0.500  0.500  0.500  1.0
  Bi  Bi28  1  0.263  0.750  0.513  1.0
  Bi  Bi29  1  0.237  0.250  0.987  1.0
  Bi  Bi30  1  0.750  0.513  0.263  1.0
  Bi  Bi31  1  0.250  0.987  0.237  1.0
  Bi  Bi32  1  0.513  0.263  0.750  1.0
  Bi  Bi33  1  0.987  0.237  0.250  1.0
  Bi  Bi34  1  0.737  0.250  0.487  1.0
  Bi  Bi35  1  0.763  0.750  0.013  1.0
  Bi  Bi36  1  0.250  0.487  0.737  1.0
  Bi  Bi37  1  0.750  0.013  0.763  1.0
  Bi  Bi38  1  0.487  0.737  0.250  1.0
  Bi  Bi39  1  0.013  0.763  0.750  1.0
[/CIF]
.