The structure described by Mg3(Ni10B3)2 crystallizes in the cubic Fm-3m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to four equivalent Ni(1) and twelve equivalent Ni(2) atoms to form distorted MgNi16 tetrahedra that share edges with six equivalent Mg(1)Ni16 tetrahedra, edges with twelve equivalent Ni(1)MgNi6B3 tetrahedra, faces with four equivalent Mg(2)Ni12 cuboctahedra, and faces with four equivalent Ni(1)MgNi6B3 tetrahedra. In the second Mg site, Mg(2) is bonded to twelve equivalent Ni(2) atoms to form MgNi12 cuboctahedra that share edges with twenty-four equivalent Ni(1)MgNi6B3 tetrahedra and faces with eight equivalent Mg(1)Ni16 tetrahedra. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one Mg(1), six equivalent Ni(2), and three equivalent B(1) atoms to form NiMgNi6B3 tetrahedra that share corners with three equivalent Ni(1)MgNi6B3 tetrahedra, edges with three equivalent Mg(2)Ni12 cuboctahedra, edges with three equivalent Mg(1)Ni16 tetrahedra, edges with three equivalent Ni(1)MgNi6B3 tetrahedra,  a faceface with one Mg(1)Ni16 tetrahedra, and faces with six equivalent Ni(1)MgNi6B3 tetrahedra. In the second Ni site, Ni(2) is bonded in a 14-coordinate geometry to one Mg(2), two equivalent Mg(1), four equivalent Ni(1), five equivalent Ni(2), and two equivalent B(1) atoms. B(1) is bonded in a 8-coordinate geometry to four equivalent Ni(1) and four equivalent Ni(2) atoms. is represented by the CIF card [CIF]
data_Mg3(Ni10B3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.465
_cell_length_b   7.465
_cell_length_c   7.465
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   294.102
_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  0.750  0.750  0.750  1.0
  Mg  Mg1  1  0.250  0.250  0.250  1.0
  Mg  Mg2  1  0.000  0.000  0.000  1.0
  Ni  Ni3  1  0.385  0.385  0.844  1.0
  Ni  Ni4  1  0.615  0.615  0.615  1.0
  Ni  Ni5  1  0.000  0.340  0.000  1.0
  Ni  Ni6  1  0.340  0.000  0.000  1.0
  Ni  Ni7  1  0.000  0.340  0.660  1.0
  Ni  Ni8  1  0.844  0.385  0.385  1.0
  Ni  Ni9  1  0.340  0.000  0.660  1.0
  Ni  Ni10  1  0.000  0.000  0.340  1.0
  Ni  Ni11  1  0.660  0.340  0.000  1.0
  Ni  Ni12  1  0.000  0.660  0.340  1.0
  Ni  Ni13  1  0.000  0.000  0.660  1.0
  Ni  Ni14  1  0.340  0.660  0.000  1.0
  Ni  Ni15  1  0.660  0.000  0.000  1.0
  Ni  Ni16  1  0.000  0.660  0.000  1.0
  Ni  Ni17  1  0.385  0.844  0.385  1.0
  Ni  Ni18  1  0.615  0.615  0.156  1.0
  Ni  Ni19  1  0.615  0.156  0.615  1.0
  Ni  Ni20  1  0.156  0.615  0.615  1.0
  Ni  Ni21  1  0.385  0.385  0.385  1.0
  Ni  Ni22  1  0.660  0.000  0.340  1.0
  B  B23  1  0.729  0.271  0.729  1.0
  B  B24  1  0.271  0.729  0.271  1.0
  B  B25  1  0.271  0.729  0.729  1.0
  B  B26  1  0.271  0.271  0.729  1.0
  B  B27  1  0.729  0.729  0.271  1.0
  B  B28  1  0.729  0.271  0.271  1.0
[/CIF]
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The structure described by Mg3(Ni10B3)2 crystallizes in the cubic Fm-3m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to four equivalent Ni(1) and twelve equivalent Ni(2) atoms to form distorted MgNi16 tetrahedra that share edges with six equivalent Mg(1)Ni16 tetrahedra, edges with twelve equivalent Ni(1)MgNi6B3 tetrahedra, faces with four equivalent Mg(2)Ni12 cuboctahedra, and faces with four equivalent Ni(1)MgNi6B3 tetrahedra. In the second Mg site, Mg(2) is bonded to twelve equivalent Ni(2) atoms to form MgNi12 cuboctahedra that share edges with twenty-four equivalent Ni(1)MgNi6B3 tetrahedra and faces with eight equivalent Mg(1)Ni16 tetrahedra. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one Mg(1), six equivalent Ni(2), and three equivalent B(1) atoms to form NiMgNi6B3 tetrahedra that share corners with three equivalent Ni(1)MgNi6B3 tetrahedra, edges with three equivalent Mg(2)Ni12 cuboctahedra, edges with three equivalent Mg(1)Ni16 tetrahedra, edges with three equivalent Ni(1)MgNi6B3 tetrahedra,  a faceface with one Mg(1)Ni16 tetrahedra, and faces with six equivalent Ni(1)MgNi6B3 tetrahedra. In the second Ni site, Ni(2) is bonded in a 14-coordinate geometry to one Mg(2), two equivalent Mg(1), four equivalent Ni(1), five equivalent Ni(2), and two equivalent B(1) atoms. B(1) is bonded in a 8-coordinate geometry to four equivalent Ni(1) and four equivalent Ni(2) atoms. is represented by the CIF card [CIF]
data_Mg3(Ni10B3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.465
_cell_length_b   7.465
_cell_length_c   7.465
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   294.102
_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  0.750  0.750  0.750  1.0
  Mg  Mg1  1  0.250  0.250  0.250  1.0
  Mg  Mg2  1  0.000  0.000  0.000  1.0
  Ni  Ni3  1  0.385  0.385  0.844  1.0
  Ni  Ni4  1  0.615  0.615  0.615  1.0
  Ni  Ni5  1  0.000  0.340  0.000  1.0
  Ni  Ni6  1  0.340  0.000  0.000  1.0
  Ni  Ni7  1  0.000  0.340  0.660  1.0
  Ni  Ni8  1  0.844  0.385  0.385  1.0
  Ni  Ni9  1  0.340  0.000  0.660  1.0
  Ni  Ni10  1  0.000  0.000  0.340  1.0
  Ni  Ni11  1  0.660  0.340  0.000  1.0
  Ni  Ni12  1  0.000  0.660  0.340  1.0
  Ni  Ni13  1  0.000  0.000  0.660  1.0
  Ni  Ni14  1  0.340  0.660  0.000  1.0
  Ni  Ni15  1  0.660  0.000  0.000  1.0
  Ni  Ni16  1  0.000  0.660  0.000  1.0
  Ni  Ni17  1  0.385  0.844  0.385  1.0
  Ni  Ni18  1  0.615  0.615  0.156  1.0
  Ni  Ni19  1  0.615  0.156  0.615  1.0
  Ni  Ni20  1  0.156  0.615  0.615  1.0
  Ni  Ni21  1  0.385  0.385  0.385  1.0
  Ni  Ni22  1  0.660  0.000  0.340  1.0
  B  B23  1  0.729  0.271  0.729  1.0
  B  B24  1  0.271  0.729  0.271  1.0
  B  B25  1  0.271  0.729  0.729  1.0
  B  B26  1  0.271  0.271  0.729  1.0
  B  B27  1  0.729  0.729  0.271  1.0
  B  B28  1  0.729  0.271  0.271  1.0
[/CIF]
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