The material structure described by Mg5Zn crystallizes in the orthorhombic Amm2 space group. There are five inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(5), and four equivalent Mg(4) atoms to form MgMg12 cuboctahedra that share corners with six equivalent Mg(3)Mg10Zn2 cuboctahedra, corners with six equivalent Mg(1)Mg12 cuboctahedra, corners with six equivalent Mg(2)Mg8Zn4 cuboctahedra, edges with three equivalent Mg(3)Mg10Zn2 cuboctahedra, edges with three equivalent Mg(2)Mg8Zn4 cuboctahedra, edges with four equivalent Mg(4)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(3)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(2)Mg8Zn4 cuboctahedra, faces with four equivalent Mg(4)Mg10Zn2 cuboctahedra, faces with four equivalent Mg(1)Mg12 cuboctahedra, and faces with six equivalent Mg(5)Mg8Zn2 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and four equivalent Zn(1) atoms to form distorted MgMg8Zn4 cuboctahedra that share corners with six equivalent Mg(3)Mg10Zn2 cuboctahedra, corners with six equivalent Mg(1)Mg12 cuboctahedra, corners with six equivalent Mg(2)Mg8Zn4 cuboctahedra, edges with three equivalent Mg(3)Mg10Zn2 cuboctahedra, edges with three equivalent Mg(1)Mg12 cuboctahedra, edges with eight equivalent Mg(5)Mg8Zn2 cuboctahedra, faces with two equivalent Mg(3)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(5)Mg8Zn2 cuboctahedra, faces with four equivalent Mg(2)Mg8Zn4 cuboctahedra, and faces with six equivalent Mg(4)Mg10Zn2 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), four equivalent Mg(5), and two equivalent Zn(1) atoms to form distorted MgMg10Zn2 cuboctahedra that share corners with four equivalent Mg(5)Mg8Zn2 cuboctahedra, corners with six equivalent Mg(3)Mg10Zn2 cuboctahedra, corners with six equivalent Mg(1)Mg12 cuboctahedra, corners with six equivalent Mg(2)Mg8Zn4 cuboctahedra, edges with three equivalent Mg(1)Mg12 cuboctahedra, edges with three equivalent Mg(2)Mg8Zn4 cuboctahedra, edges with eight equivalent Mg(4)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(4)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(2)Mg8Zn4 cuboctahedra, faces with four equivalent Mg(3)Mg10Zn2 cuboctahedra, and faces with four equivalent Mg(5)Mg8Zn2 cuboctahedra. In the fourth Mg site, Mg(4) is bonded to two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), four equivalent Mg(1), and two equivalent Zn(1) atoms to form distorted MgMg10Zn2 cuboctahedra that share corners with six equivalent Mg(4)Mg10Zn2 cuboctahedra, corners with eight equivalent Mg(5)Mg8Zn2 cuboctahedra,  an edgeedge with one Mg(5)Mg8Zn2 cuboctahedra, edges with four equivalent Mg(1)Mg12 cuboctahedra, edges with eight equivalent Mg(3)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(3)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(5)Mg8Zn2 cuboctahedra, faces with four equivalent Mg(4)Mg10Zn2 cuboctahedra, faces with four equivalent Mg(1)Mg12 cuboctahedra, and faces with six equivalent Mg(2)Mg8Zn4 cuboctahedra. In the fifth Mg site, Mg(5) is bonded to two equivalent Mg(1), two equivalent Mg(4), four equivalent Mg(3), and two equivalent Zn(1) atoms to form distorted MgMg8Zn2 cuboctahedra that share corners with four equivalent Mg(3)Mg10Zn2 cuboctahedra, corners with four equivalent Mg(5)Mg8Zn2 cuboctahedra, corners with eight equivalent Mg(4)Mg10Zn2 cuboctahedra,  an edgeedge with one Mg(4)Mg10Zn2 cuboctahedra, edges with eight equivalent Mg(2)Mg8Zn4 cuboctahedra, faces with two equivalent Mg(4)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(2)Mg8Zn4 cuboctahedra, faces with four equivalent Mg(3)Mg10Zn2 cuboctahedra, faces with four equivalent Mg(5)Mg8Zn2 cuboctahedra, and faces with six equivalent Mg(1)Mg12 cuboctahedra. Zn(1) is bonded in a 10-coordinate geometry to two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(5), and four equivalent Mg(2) atoms. is represented by the CIF card [CIF]
data_Mg5Zn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.088
_cell_length_b   8.088
_cell_length_c   4.960
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   157.548
_symmetry_Int_Tables_number   1
_cell_volume   123.908
_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  0.001  0.999  0.500  1.0
  Mg  Mg1  1  0.329  0.671  0.500  1.0
  Mg  Mg2  1  0.669  0.331  0.500  1.0
  Mg  Mg3  1  0.438  0.562  0.000  1.0
  Mg  Mg4  1  0.120  0.880  0.000  1.0
  Zn  Zn5  1  0.777  0.223  0.000  1.0
[/CIF]
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The material structure described by Mg5Zn crystallizes in the orthorhombic Amm2 space group. There are five inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(5), and four equivalent Mg(4) atoms to form MgMg12 cuboctahedra that share corners with six equivalent Mg(3)Mg10Zn2 cuboctahedra, corners with six equivalent Mg(1)Mg12 cuboctahedra, corners with six equivalent Mg(2)Mg8Zn4 cuboctahedra, edges with three equivalent Mg(3)Mg10Zn2 cuboctahedra, edges with three equivalent Mg(2)Mg8Zn4 cuboctahedra, edges with four equivalent Mg(4)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(3)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(2)Mg8Zn4 cuboctahedra, faces with four equivalent Mg(4)Mg10Zn2 cuboctahedra, faces with four equivalent Mg(1)Mg12 cuboctahedra, and faces with six equivalent Mg(5)Mg8Zn2 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and four equivalent Zn(1) atoms to form distorted MgMg8Zn4 cuboctahedra that share corners with six equivalent Mg(3)Mg10Zn2 cuboctahedra, corners with six equivalent Mg(1)Mg12 cuboctahedra, corners with six equivalent Mg(2)Mg8Zn4 cuboctahedra, edges with three equivalent Mg(3)Mg10Zn2 cuboctahedra, edges with three equivalent Mg(1)Mg12 cuboctahedra, edges with eight equivalent Mg(5)Mg8Zn2 cuboctahedra, faces with two equivalent Mg(3)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(5)Mg8Zn2 cuboctahedra, faces with four equivalent Mg(2)Mg8Zn4 cuboctahedra, and faces with six equivalent Mg(4)Mg10Zn2 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), four equivalent Mg(5), and two equivalent Zn(1) atoms to form distorted MgMg10Zn2 cuboctahedra that share corners with four equivalent Mg(5)Mg8Zn2 cuboctahedra, corners with six equivalent Mg(3)Mg10Zn2 cuboctahedra, corners with six equivalent Mg(1)Mg12 cuboctahedra, corners with six equivalent Mg(2)Mg8Zn4 cuboctahedra, edges with three equivalent Mg(1)Mg12 cuboctahedra, edges with three equivalent Mg(2)Mg8Zn4 cuboctahedra, edges with eight equivalent Mg(4)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(4)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(2)Mg8Zn4 cuboctahedra, faces with four equivalent Mg(3)Mg10Zn2 cuboctahedra, and faces with four equivalent Mg(5)Mg8Zn2 cuboctahedra. In the fourth Mg site, Mg(4) is bonded to two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), four equivalent Mg(1), and two equivalent Zn(1) atoms to form distorted MgMg10Zn2 cuboctahedra that share corners with six equivalent Mg(4)Mg10Zn2 cuboctahedra, corners with eight equivalent Mg(5)Mg8Zn2 cuboctahedra,  an edgeedge with one Mg(5)Mg8Zn2 cuboctahedra, edges with four equivalent Mg(1)Mg12 cuboctahedra, edges with eight equivalent Mg(3)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(3)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(5)Mg8Zn2 cuboctahedra, faces with four equivalent Mg(4)Mg10Zn2 cuboctahedra, faces with four equivalent Mg(1)Mg12 cuboctahedra, and faces with six equivalent Mg(2)Mg8Zn4 cuboctahedra. In the fifth Mg site, Mg(5) is bonded to two equivalent Mg(1), two equivalent Mg(4), four equivalent Mg(3), and two equivalent Zn(1) atoms to form distorted MgMg8Zn2 cuboctahedra that share corners with four equivalent Mg(3)Mg10Zn2 cuboctahedra, corners with four equivalent Mg(5)Mg8Zn2 cuboctahedra, corners with eight equivalent Mg(4)Mg10Zn2 cuboctahedra,  an edgeedge with one Mg(4)Mg10Zn2 cuboctahedra, edges with eight equivalent Mg(2)Mg8Zn4 cuboctahedra, faces with two equivalent Mg(4)Mg10Zn2 cuboctahedra, faces with two equivalent Mg(2)Mg8Zn4 cuboctahedra, faces with four equivalent Mg(3)Mg10Zn2 cuboctahedra, faces with four equivalent Mg(5)Mg8Zn2 cuboctahedra, and faces with six equivalent Mg(1)Mg12 cuboctahedra. Zn(1) is bonded in a 10-coordinate geometry to two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(5), and four equivalent Mg(2) atoms. is represented by the CIF card [CIF]
data_Mg5Zn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.088
_cell_length_b   8.088
_cell_length_c   4.960
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   157.548
_symmetry_Int_Tables_number   1
_cell_volume   123.908
_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  0.001  0.999  0.500  1.0
  Mg  Mg1  1  0.329  0.671  0.500  1.0
  Mg  Mg2  1  0.669  0.331  0.500  1.0
  Mg  Mg3  1  0.438  0.562  0.000  1.0
  Mg  Mg4  1  0.120  0.880  0.000  1.0
  Zn  Zn5  1  0.777  0.223  0.000  1.0
[/CIF]
.