The crystal structure described by Sm is alpha Samarium structured and crystallizes in the trigonal R-3m space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to six equivalent Sm(1) and six equivalent Sm(2) atoms to form a mixture of edge, corner, and face-sharing SmSm12 cuboctahedra. In the second Sm site, Sm(2) is bonded to three equivalent Sm(1) and nine equivalent Sm(2) atoms to form a mixture of edge, corner, and face-sharing SmSm12 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.014
_cell_length_b   9.014
_cell_length_c   9.014
_cell_angle_alpha   23.457
_cell_angle_beta   23.457
_cell_angle_gamma   23.457
_symmetry_Int_Tables_number   1
_cell_volume   101.920
_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
  Sm  Sm0  1  0.000  0.000  0.000  1.0
  Sm  Sm1  1  0.222  0.222  0.222  1.0
  Sm  Sm2  1  0.778  0.778  0.778  1.0
[/CIF]
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The crystal structure described by Sm is alpha Samarium structured and crystallizes in the trigonal R-3m space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to six equivalent Sm(1) and six equivalent Sm(2) atoms to form a mixture of edge, corner, and face-sharing SmSm12 cuboctahedra. In the second Sm site, Sm(2) is bonded to three equivalent Sm(1) and nine equivalent Sm(2) atoms to form a mixture of edge, corner, and face-sharing SmSm12 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.014
_cell_length_b   9.014
_cell_length_c   9.014
_cell_angle_alpha   23.457
_cell_angle_beta   23.457
_cell_angle_gamma   23.457
_symmetry_Int_Tables_number   1
_cell_volume   101.920
_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
  Sm  Sm0  1  0.000  0.000  0.000  1.0
  Sm  Sm1  1  0.222  0.222  0.222  1.0
  Sm  Sm2  1  0.778  0.778  0.778  1.0
[/CIF]
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