The material described by Sm6Fe23 crystallizes in the cubic Fm-3m space group. Sm(1) is bonded in a 12-coordinate geometry to four equivalent Fe(2), four equivalent Fe(3), and four equivalent Fe(4) atoms. There are four inequivalent Fe sites. In the first Fe site, Fe(4) is bonded in a distorted q6 geometry to three equivalent Sm(1), three equivalent Fe(2), three equivalent Fe(3), and three equivalent Fe(4) atoms. In the second Fe site, Fe(1) is bonded in a body-centered cubic geometry to eight equivalent Fe(3) atoms. In the third Fe site, Fe(2) is bonded to four equivalent Sm(1), four equivalent Fe(3), and four equivalent Fe(4) atoms to form a mixture of corner and face-sharing FeSm4Fe8 cuboctahedra. In the fourth Fe site, Fe(3) is bonded in a 13-coordinate geometry to three equivalent Sm(1), one Fe(1), three equivalent Fe(2), three equivalent Fe(3), and three equivalent Fe(4) atoms. is represented by the CIF file [CIF]
data_Sm6Fe23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.571
_cell_length_b   8.571
_cell_length_c   8.571
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   445.293
_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
  Sm  Sm0  1  0.710  0.290  0.290  1.0
  Sm  Sm1  1  0.710  0.290  0.710  1.0
  Sm  Sm2  1  0.710  0.710  0.290  1.0
  Sm  Sm3  1  0.290  0.710  0.710  1.0
  Sm  Sm4  1  0.290  0.710  0.290  1.0
  Sm  Sm5  1  0.290  0.290  0.710  1.0
  Fe  Fe6  1  0.000  0.000  0.000  1.0
  Fe  Fe7  1  0.500  0.000  0.000  1.0
  Fe  Fe8  1  0.500  0.000  0.500  1.0
  Fe  Fe9  1  0.500  0.500  0.000  1.0
  Fe  Fe10  1  0.000  0.500  0.500  1.0
  Fe  Fe11  1  0.000  0.500  0.000  1.0
  Fe  Fe12  1  0.000  0.000  0.500  1.0
  Fe  Fe13  1  0.633  0.122  0.122  1.0
  Fe  Fe14  1  0.122  0.633  0.122  1.0
  Fe  Fe15  1  0.122  0.122  0.633  1.0
  Fe  Fe16  1  0.122  0.122  0.122  1.0
  Fe  Fe17  1  0.367  0.878  0.878  1.0
  Fe  Fe18  1  0.878  0.367  0.878  1.0
  Fe  Fe19  1  0.878  0.878  0.367  1.0
  Fe  Fe20  1  0.878  0.878  0.878  1.0
  Fe  Fe21  1  0.031  0.323  0.323  1.0
  Fe  Fe22  1  0.323  0.031  0.323  1.0
  Fe  Fe23  1  0.323  0.323  0.031  1.0
  Fe  Fe24  1  0.323  0.323  0.323  1.0
  Fe  Fe25  1  0.969  0.677  0.677  1.0
  Fe  Fe26  1  0.677  0.969  0.677  1.0
  Fe  Fe27  1  0.677  0.677  0.969  1.0
  Fe  Fe28  1  0.677  0.677  0.677  1.0
[/CIF]
.
The material described by Sm6Fe23 crystallizes in the cubic Fm-3m space group. Sm(1) is bonded in a 12-coordinate geometry to four equivalent Fe(2), four equivalent Fe(3), and four equivalent Fe(4) atoms. There are four inequivalent Fe sites. In the first Fe site, Fe(4) is bonded in a distorted q6 geometry to three equivalent Sm(1), three equivalent Fe(2), three equivalent Fe(3), and three equivalent Fe(4) atoms. In the second Fe site, Fe(1) is bonded in a body-centered cubic geometry to eight equivalent Fe(3) atoms. In the third Fe site, Fe(2) is bonded to four equivalent Sm(1), four equivalent Fe(3), and four equivalent Fe(4) atoms to form a mixture of corner and face-sharing FeSm4Fe8 cuboctahedra. In the fourth Fe site, Fe(3) is bonded in a 13-coordinate geometry to three equivalent Sm(1), one Fe(1), three equivalent Fe(2), three equivalent Fe(3), and three equivalent Fe(4) atoms. is represented by the CIF file [CIF]
data_Sm6Fe23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.571
_cell_length_b   8.571
_cell_length_c   8.571
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   445.293
_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
  Sm  Sm0  1  0.710  0.290  0.290  1.0
  Sm  Sm1  1  0.710  0.290  0.710  1.0
  Sm  Sm2  1  0.710  0.710  0.290  1.0
  Sm  Sm3  1  0.290  0.710  0.710  1.0
  Sm  Sm4  1  0.290  0.710  0.290  1.0
  Sm  Sm5  1  0.290  0.290  0.710  1.0
  Fe  Fe6  1  0.000  0.000  0.000  1.0
  Fe  Fe7  1  0.500  0.000  0.000  1.0
  Fe  Fe8  1  0.500  0.000  0.500  1.0
  Fe  Fe9  1  0.500  0.500  0.000  1.0
  Fe  Fe10  1  0.000  0.500  0.500  1.0
  Fe  Fe11  1  0.000  0.500  0.000  1.0
  Fe  Fe12  1  0.000  0.000  0.500  1.0
  Fe  Fe13  1  0.633  0.122  0.122  1.0
  Fe  Fe14  1  0.122  0.633  0.122  1.0
  Fe  Fe15  1  0.122  0.122  0.633  1.0
  Fe  Fe16  1  0.122  0.122  0.122  1.0
  Fe  Fe17  1  0.367  0.878  0.878  1.0
  Fe  Fe18  1  0.878  0.367  0.878  1.0
  Fe  Fe19  1  0.878  0.878  0.367  1.0
  Fe  Fe20  1  0.878  0.878  0.878  1.0
  Fe  Fe21  1  0.031  0.323  0.323  1.0
  Fe  Fe22  1  0.323  0.031  0.323  1.0
  Fe  Fe23  1  0.323  0.323  0.031  1.0
  Fe  Fe24  1  0.323  0.323  0.323  1.0
  Fe  Fe25  1  0.969  0.677  0.677  1.0
  Fe  Fe26  1  0.677  0.969  0.677  1.0
  Fe  Fe27  1  0.677  0.677  0.969  1.0
  Fe  Fe28  1  0.677  0.677  0.677  1.0
[/CIF]
.