The crystal structure described by AlSiSm is hexagonal omega structure-derived structured and crystallizes in the tetragonal I4_1md space group. Sm(1) is bonded to six Al(1,1) and six equivalent Si(1) atoms to form a mixture of edge and face-sharing SmAl6Si6 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three equivalent Si(1) atoms. In the second Al site, Al(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three equivalent Si(1) atoms. Si(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three Al(1,1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmAlSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.177
_cell_length_b   4.177
_cell_length_c   7.822
_cell_angle_alpha   105.484
_cell_angle_beta   105.485
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   126.355
_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  0.329  0.829  0.659  1.0
  Sm  Sm1  1  0.579  0.579  0.159  1.0
  Al  Al2  1  0.913  0.413  0.827  1.0
  Al  Al3  1  0.163  0.163  0.327  1.0
  Si  Si4  1  0.998  0.998  0.995  1.0
  Si  Si5  1  0.748  0.248  0.495  1.0
[/CIF]
.
The crystal structure described by AlSiSm is hexagonal omega structure-derived structured and crystallizes in the tetragonal I4_1md space group. Sm(1) is bonded to six Al(1,1) and six equivalent Si(1) atoms to form a mixture of edge and face-sharing SmAl6Si6 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three equivalent Si(1) atoms. In the second Al site, Al(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three equivalent Si(1) atoms. Si(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three Al(1,1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmAlSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.177
_cell_length_b   4.177
_cell_length_c   7.822
_cell_angle_alpha   105.484
_cell_angle_beta   105.485
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   126.355
_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  0.329  0.829  0.659  1.0
  Sm  Sm1  1  0.579  0.579  0.159  1.0
  Al  Al2  1  0.913  0.413  0.827  1.0
  Al  Al3  1  0.163  0.163  0.327  1.0
  Si  Si4  1  0.998  0.998  0.995  1.0
  Si  Si5  1  0.748  0.248  0.495  1.0
[/CIF]
.