The material described by SmMg2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. Mg(1) is bonded to six equivalent Mg(1) and six equivalent Sm(1) atoms to form a mixture of face, corner, and edge-sharing MgSm6Mg6 cuboctahedra. Sm(1) is bonded in a 16-coordinate geometry to twelve equivalent Mg(1) and four equivalent Sm(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.087
_cell_length_b   6.087
_cell_length_c   6.087
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   159.450
_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
  Sm  Sm0  1  0.875  0.875  0.875  1.0
  Sm  Sm1  1  0.125  0.125  0.125  1.0
  Mg  Mg2  1  0.500  0.500  0.500  1.0
  Mg  Mg3  1  0.500  0.500  0.000  1.0
  Mg  Mg4  1  0.000  0.500  0.500  1.0
  Mg  Mg5  1  0.500  0.000  0.500  1.0
[/CIF]
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The material described by SmMg2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. Mg(1) is bonded to six equivalent Mg(1) and six equivalent Sm(1) atoms to form a mixture of face, corner, and edge-sharing MgSm6Mg6 cuboctahedra. Sm(1) is bonded in a 16-coordinate geometry to twelve equivalent Mg(1) and four equivalent Sm(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.087
_cell_length_b   6.087
_cell_length_c   6.087
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   159.450
_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
  Sm  Sm0  1  0.875  0.875  0.875  1.0
  Sm  Sm1  1  0.125  0.125  0.125  1.0
  Mg  Mg2  1  0.500  0.500  0.500  1.0
  Mg  Mg3  1  0.500  0.500  0.000  1.0
  Mg  Mg4  1  0.000  0.500  0.500  1.0
  Mg  Mg5  1  0.500  0.000  0.500  1.0
[/CIF]
.