The material described by Mg8Pt4B crystallizes in the cubic Fd-3m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 4-coordinate geometry to four equivalent Pt(1) atoms. In the second Mg site, Mg(2) is bonded in a 8-coordinate geometry to six equivalent Pt(1) and two equivalent B(1) atoms. Pt(1) is bonded in a 10-coordinate geometry to three equivalent Mg(2), six equivalent Mg(1), and one B(1) atom. B(1) is bonded in a body-centered cubic geometry to four equivalent Mg(2) and four equivalent Pt(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg8BPt4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.659
_cell_length_b   8.659
_cell_length_c   8.659
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   459.025
_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  0.450  0.050  0.050  1.0
  Mg  Mg1  1  0.450  0.450  0.050  1.0
  Mg  Mg2  1  0.200  0.800  0.800  1.0
  Mg  Mg3  1  0.625  0.125  0.625  1.0
  Mg  Mg4  1  0.200  0.800  0.200  1.0
  Mg  Mg5  1  0.800  0.800  0.200  1.0
  Mg  Mg6  1  0.800  0.200  0.200  1.0
  Mg  Mg7  1  0.050  0.450  0.050  1.0
  Mg  Mg8  1  0.625  0.625  0.125  1.0
  Mg  Mg9  1  0.450  0.050  0.450  1.0
  Mg  Mg10  1  0.050  0.050  0.450  1.0
  Mg  Mg11  1  0.800  0.200  0.800  1.0
  Mg  Mg12  1  0.625  0.625  0.625  1.0
  Mg  Mg13  1  0.200  0.200  0.800  1.0
  Mg  Mg14  1  0.125  0.625  0.625  1.0
  Mg  Mg15  1  0.050  0.450  0.450  1.0
  B  B16  1  0.750  0.750  0.750  1.0
  B  B17  1  0.500  0.500  0.500  1.0
  Pt  Pt18  1  0.401  0.798  0.401  1.0
  Pt  Pt19  1  0.401  0.401  0.401  1.0
  Pt  Pt20  1  0.798  0.401  0.401  1.0
  Pt  Pt21  1  0.452  0.849  0.849  1.0
  Pt  Pt22  1  0.849  0.452  0.849  1.0
  Pt  Pt23  1  0.849  0.849  0.452  1.0
  Pt  Pt24  1  0.849  0.849  0.849  1.0
  Pt  Pt25  1  0.401  0.401  0.798  1.0
[/CIF]
.
The material described by Mg8Pt4B crystallizes in the cubic Fd-3m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 4-coordinate geometry to four equivalent Pt(1) atoms. In the second Mg site, Mg(2) is bonded in a 8-coordinate geometry to six equivalent Pt(1) and two equivalent B(1) atoms. Pt(1) is bonded in a 10-coordinate geometry to three equivalent Mg(2), six equivalent Mg(1), and one B(1) atom. B(1) is bonded in a body-centered cubic geometry to four equivalent Mg(2) and four equivalent Pt(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg8BPt4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.659
_cell_length_b   8.659
_cell_length_c   8.659
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   459.025
_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  0.450  0.050  0.050  1.0
  Mg  Mg1  1  0.450  0.450  0.050  1.0
  Mg  Mg2  1  0.200  0.800  0.800  1.0
  Mg  Mg3  1  0.625  0.125  0.625  1.0
  Mg  Mg4  1  0.200  0.800  0.200  1.0
  Mg  Mg5  1  0.800  0.800  0.200  1.0
  Mg  Mg6  1  0.800  0.200  0.200  1.0
  Mg  Mg7  1  0.050  0.450  0.050  1.0
  Mg  Mg8  1  0.625  0.625  0.125  1.0
  Mg  Mg9  1  0.450  0.050  0.450  1.0
  Mg  Mg10  1  0.050  0.050  0.450  1.0
  Mg  Mg11  1  0.800  0.200  0.800  1.0
  Mg  Mg12  1  0.625  0.625  0.625  1.0
  Mg  Mg13  1  0.200  0.200  0.800  1.0
  Mg  Mg14  1  0.125  0.625  0.625  1.0
  Mg  Mg15  1  0.050  0.450  0.450  1.0
  B  B16  1  0.750  0.750  0.750  1.0
  B  B17  1  0.500  0.500  0.500  1.0
  Pt  Pt18  1  0.401  0.798  0.401  1.0
  Pt  Pt19  1  0.401  0.401  0.401  1.0
  Pt  Pt20  1  0.798  0.401  0.401  1.0
  Pt  Pt21  1  0.452  0.849  0.849  1.0
  Pt  Pt22  1  0.849  0.452  0.849  1.0
  Pt  Pt23  1  0.849  0.849  0.452  1.0
  Pt  Pt24  1  0.849  0.849  0.849  1.0
  Pt  Pt25  1  0.401  0.401  0.798  1.0
[/CIF]
.