The compound described by Mg2Sb crystallizes in the monoclinic C2/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 5-coordinate geometry to five equivalent Sb(1) atoms. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to four equivalent Sb(1) atoms. Sb(1) is bonded in a 9-coordinate geometry to four equivalent Mg(2) and five equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg2Sb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.930
_cell_length_b   5.930
_cell_length_c   7.808
_cell_angle_alpha   69.223
_cell_angle_beta   69.223
_cell_angle_gamma   34.866
_symmetry_Int_Tables_number   1
_cell_volume   145.690
_cell_formula_units_Z   2
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  0.840  0.840  0.125  1.0
  Mg  Mg1  1  0.146  0.146  0.470  1.0
  Mg  Mg2  1  0.854  0.854  0.530  1.0
  Mg  Mg3  1  0.160  0.160  0.875  1.0
  Sb  Sb4  1  0.553  0.553  0.216  1.0
  Sb  Sb5  1  0.447  0.447  0.784  1.0
[/CIF]
.
The compound described by Mg2Sb crystallizes in the monoclinic C2/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 5-coordinate geometry to five equivalent Sb(1) atoms. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to four equivalent Sb(1) atoms. Sb(1) is bonded in a 9-coordinate geometry to four equivalent Mg(2) and five equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg2Sb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.930
_cell_length_b   5.930
_cell_length_c   7.808
_cell_angle_alpha   69.223
_cell_angle_beta   69.223
_cell_angle_gamma   34.866
_symmetry_Int_Tables_number   1
_cell_volume   145.690
_cell_formula_units_Z   2
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  0.840  0.840  0.125  1.0
  Mg  Mg1  1  0.146  0.146  0.470  1.0
  Mg  Mg2  1  0.854  0.854  0.530  1.0
  Mg  Mg3  1  0.160  0.160  0.875  1.0
  Sb  Sb4  1  0.553  0.553  0.216  1.0
  Sb  Sb5  1  0.447  0.447  0.784  1.0
[/CIF]
.