The crystal structure described by Mg2Zn crystallizes in the monoclinic C2/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to four equivalent Mg(2), five equivalent Mg(1), and three equivalent Zn(1) atoms to form distorted MgMg9Zn3 cuboctahedra that share corners with six equivalent Mg(2)Mg7Zn5 cuboctahedra, corners with six equivalent Mg(1)Mg9Zn3 cuboctahedra, edges with two equivalent Mg(1)Mg9Zn3 cuboctahedra, edges with nine equivalent Mg(2)Mg7Zn5 cuboctahedra, faces with six equivalent Mg(2)Mg7Zn5 cuboctahedra, and faces with seven equivalent Mg(1)Mg9Zn3 cuboctahedra. In the second Mg site, Mg(2) is bonded to three equivalent Mg(2), four equivalent Mg(1), and five equivalent Zn(1) atoms to form distorted MgMg7Zn5 cuboctahedra that share corners with six equivalent Mg(2)Mg7Zn5 cuboctahedra, corners with six equivalent Mg(1)Mg9Zn3 cuboctahedra, edges with four equivalent Mg(2)Mg7Zn5 cuboctahedra, edges with nine equivalent Mg(1)Mg9Zn3 cuboctahedra, faces with six equivalent Mg(2)Mg7Zn5 cuboctahedra, and faces with six equivalent Mg(1)Mg9Zn3 cuboctahedra. Zn(1) is bonded in a 8-coordinate geometry to three equivalent Mg(1) and five equivalent Mg(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg2Zn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.794
_cell_length_b   5.794
_cell_length_c   7.180
_cell_angle_alpha   74.190
_cell_angle_beta   74.190
_cell_angle_gamma   31.137
_symmetry_Int_Tables_number   1
_cell_volume   119.535
_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  0.143  0.143  0.964  1.0
  Mg  Mg1  1  0.530  0.530  0.684  1.0
  Mg  Mg2  1  0.470  0.470  0.316  1.0
  Mg  Mg3  1  0.857  0.857  0.036  1.0
  Zn  Zn4  1  0.803  0.803  0.638  1.0
  Zn  Zn5  1  0.197  0.197  0.362  1.0
[/CIF]
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The crystal structure described by Mg2Zn crystallizes in the monoclinic C2/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to four equivalent Mg(2), five equivalent Mg(1), and three equivalent Zn(1) atoms to form distorted MgMg9Zn3 cuboctahedra that share corners with six equivalent Mg(2)Mg7Zn5 cuboctahedra, corners with six equivalent Mg(1)Mg9Zn3 cuboctahedra, edges with two equivalent Mg(1)Mg9Zn3 cuboctahedra, edges with nine equivalent Mg(2)Mg7Zn5 cuboctahedra, faces with six equivalent Mg(2)Mg7Zn5 cuboctahedra, and faces with seven equivalent Mg(1)Mg9Zn3 cuboctahedra. In the second Mg site, Mg(2) is bonded to three equivalent Mg(2), four equivalent Mg(1), and five equivalent Zn(1) atoms to form distorted MgMg7Zn5 cuboctahedra that share corners with six equivalent Mg(2)Mg7Zn5 cuboctahedra, corners with six equivalent Mg(1)Mg9Zn3 cuboctahedra, edges with four equivalent Mg(2)Mg7Zn5 cuboctahedra, edges with nine equivalent Mg(1)Mg9Zn3 cuboctahedra, faces with six equivalent Mg(2)Mg7Zn5 cuboctahedra, and faces with six equivalent Mg(1)Mg9Zn3 cuboctahedra. Zn(1) is bonded in a 8-coordinate geometry to three equivalent Mg(1) and five equivalent Mg(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg2Zn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.794
_cell_length_b   5.794
_cell_length_c   7.180
_cell_angle_alpha   74.190
_cell_angle_beta   74.190
_cell_angle_gamma   31.137
_symmetry_Int_Tables_number   1
_cell_volume   119.535
_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  0.143  0.143  0.964  1.0
  Mg  Mg1  1  0.530  0.530  0.684  1.0
  Mg  Mg2  1  0.470  0.470  0.316  1.0
  Mg  Mg3  1  0.857  0.857  0.036  1.0
  Zn  Zn4  1  0.803  0.803  0.638  1.0
  Zn  Zn5  1  0.197  0.197  0.362  1.0
[/CIF]
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