The compound described by Mg2Zn11 crystallizes in the cubic Pm-3 space group. Mg(1) is bonded in a 12-coordinate geometry to four equivalent Zn(3), four equivalent Zn(4), and six equivalent Zn(5) atoms. There are five inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to twelve equivalent Zn(5) atoms to form face-sharing ZnZn12 cuboctahedra. In the second Zn site, Zn(2) is bonded in a 10-coordinate geometry to two equivalent Zn(3), four equivalent Zn(2), and four equivalent Zn(4) atoms. In the third Zn site, Zn(3) is bonded in a 13-coordinate geometry to four equivalent Mg(1), one Zn(3), two equivalent Zn(2), two equivalent Zn(5), and four equivalent Zn(4) atoms. In the fourth Zn site, Zn(4) is bonded in a 9-coordinate geometry to three equivalent Mg(1), three equivalent Zn(2), three equivalent Zn(3), and three equivalent Zn(5) atoms. In the fifth Zn site, Zn(5) is bonded to three equivalent Mg(1), one Zn(1), one Zn(3), two equivalent Zn(4), and five equivalent Zn(5) atoms to form distorted ZnMg3Zn9 cuboctahedra that share corners with six equivalent Zn(5)Mg3Zn9 cuboctahedra,  an edgeedge with one Zn(5)Mg3Zn9 cuboctahedra,  a faceface with one Zn(1)Zn12 cuboctahedra, and faces with eleven equivalent Zn(5)Mg3Zn9 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg2Zn11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.412
_cell_length_b   8.412
_cell_length_c   8.412
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   595.185
_cell_formula_units_Z   3
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  0.302  0.000  0.500  1.0
  Mg  Mg1  1  0.500  0.302  0.000  1.0
  Mg  Mg2  1  0.000  0.500  0.302  1.0
  Mg  Mg3  1  0.500  0.698  0.000  1.0
  Mg  Mg4  1  0.000  0.500  0.698  1.0
  Mg  Mg5  1  0.698  0.000  0.500  1.0
  Zn  Zn6  1  0.500  0.500  0.500  1.0
  Zn  Zn7  1  0.230  0.000  0.000  1.0
  Zn  Zn8  1  0.000  0.230  0.000  1.0
  Zn  Zn9  1  0.000  0.000  0.230  1.0
  Zn  Zn10  1  0.000  0.770  0.000  1.0
  Zn  Zn11  1  0.000  0.000  0.770  1.0
  Zn  Zn12  1  0.770  0.000  0.000  1.0
  Zn  Zn13  1  0.161  0.500  0.000  1.0
  Zn  Zn14  1  0.000  0.161  0.500  1.0
  Zn  Zn15  1  0.500  0.000  0.161  1.0
  Zn  Zn16  1  0.000  0.839  0.500  1.0
  Zn  Zn17  1  0.500  0.000  0.839  1.0
  Zn  Zn18  1  0.839  0.500  0.000  1.0
  Zn  Zn19  1  0.218  0.218  0.218  1.0
  Zn  Zn20  1  0.782  0.782  0.218  1.0
  Zn  Zn21  1  0.218  0.782  0.782  1.0
  Zn  Zn22  1  0.782  0.218  0.782  1.0
  Zn  Zn23  1  0.782  0.782  0.782  1.0
  Zn  Zn24  1  0.218  0.218  0.782  1.0
  Zn  Zn25  1  0.782  0.218  0.218  1.0
  Zn  Zn26  1  0.218  0.782  0.218  1.0
  Zn  Zn27  1  0.500  0.236  0.342  1.0
  Zn  Zn28  1  0.342  0.500  0.236  1.0
  Zn  Zn29  1  0.236  0.342  0.500  1.0
  Zn  Zn30  1  0.764  0.658  0.500  1.0
  Zn  Zn31  1  0.342  0.500  0.764  1.0
  Zn  Zn32  1  0.764  0.342  0.500  1.0
  Zn  Zn33  1  0.658  0.500  0.236  1.0
  Zn  Zn34  1  0.658  0.500  0.764  1.0
  Zn  Zn35  1  0.236  0.658  0.500  1.0
  Zn  Zn36  1  0.500  0.764  0.658  1.0
  Zn  Zn37  1  0.500  0.236  0.658  1.0
  Zn  Zn38  1  0.500  0.764  0.342  1.0
[/CIF]
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The compound described by Mg2Zn11 crystallizes in the cubic Pm-3 space group. Mg(1) is bonded in a 12-coordinate geometry to four equivalent Zn(3), four equivalent Zn(4), and six equivalent Zn(5) atoms. There are five inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to twelve equivalent Zn(5) atoms to form face-sharing ZnZn12 cuboctahedra. In the second Zn site, Zn(2) is bonded in a 10-coordinate geometry to two equivalent Zn(3), four equivalent Zn(2), and four equivalent Zn(4) atoms. In the third Zn site, Zn(3) is bonded in a 13-coordinate geometry to four equivalent Mg(1), one Zn(3), two equivalent Zn(2), two equivalent Zn(5), and four equivalent Zn(4) atoms. In the fourth Zn site, Zn(4) is bonded in a 9-coordinate geometry to three equivalent Mg(1), three equivalent Zn(2), three equivalent Zn(3), and three equivalent Zn(5) atoms. In the fifth Zn site, Zn(5) is bonded to three equivalent Mg(1), one Zn(1), one Zn(3), two equivalent Zn(4), and five equivalent Zn(5) atoms to form distorted ZnMg3Zn9 cuboctahedra that share corners with six equivalent Zn(5)Mg3Zn9 cuboctahedra,  an edgeedge with one Zn(5)Mg3Zn9 cuboctahedra,  a faceface with one Zn(1)Zn12 cuboctahedra, and faces with eleven equivalent Zn(5)Mg3Zn9 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg2Zn11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.412
_cell_length_b   8.412
_cell_length_c   8.412
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   595.185
_cell_formula_units_Z   3
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  0.302  0.000  0.500  1.0
  Mg  Mg1  1  0.500  0.302  0.000  1.0
  Mg  Mg2  1  0.000  0.500  0.302  1.0
  Mg  Mg3  1  0.500  0.698  0.000  1.0
  Mg  Mg4  1  0.000  0.500  0.698  1.0
  Mg  Mg5  1  0.698  0.000  0.500  1.0
  Zn  Zn6  1  0.500  0.500  0.500  1.0
  Zn  Zn7  1  0.230  0.000  0.000  1.0
  Zn  Zn8  1  0.000  0.230  0.000  1.0
  Zn  Zn9  1  0.000  0.000  0.230  1.0
  Zn  Zn10  1  0.000  0.770  0.000  1.0
  Zn  Zn11  1  0.000  0.000  0.770  1.0
  Zn  Zn12  1  0.770  0.000  0.000  1.0
  Zn  Zn13  1  0.161  0.500  0.000  1.0
  Zn  Zn14  1  0.000  0.161  0.500  1.0
  Zn  Zn15  1  0.500  0.000  0.161  1.0
  Zn  Zn16  1  0.000  0.839  0.500  1.0
  Zn  Zn17  1  0.500  0.000  0.839  1.0
  Zn  Zn18  1  0.839  0.500  0.000  1.0
  Zn  Zn19  1  0.218  0.218  0.218  1.0
  Zn  Zn20  1  0.782  0.782  0.218  1.0
  Zn  Zn21  1  0.218  0.782  0.782  1.0
  Zn  Zn22  1  0.782  0.218  0.782  1.0
  Zn  Zn23  1  0.782  0.782  0.782  1.0
  Zn  Zn24  1  0.218  0.218  0.782  1.0
  Zn  Zn25  1  0.782  0.218  0.218  1.0
  Zn  Zn26  1  0.218  0.782  0.218  1.0
  Zn  Zn27  1  0.500  0.236  0.342  1.0
  Zn  Zn28  1  0.342  0.500  0.236  1.0
  Zn  Zn29  1  0.236  0.342  0.500  1.0
  Zn  Zn30  1  0.764  0.658  0.500  1.0
  Zn  Zn31  1  0.342  0.500  0.764  1.0
  Zn  Zn32  1  0.764  0.342  0.500  1.0
  Zn  Zn33  1  0.658  0.500  0.236  1.0
  Zn  Zn34  1  0.658  0.500  0.764  1.0
  Zn  Zn35  1  0.236  0.658  0.500  1.0
  Zn  Zn36  1  0.500  0.764  0.658  1.0
  Zn  Zn37  1  0.500  0.236  0.658  1.0
  Zn  Zn38  1  0.500  0.764  0.342  1.0
[/CIF]
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