The structure described by SrSm3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. Sr(1) is bonded to four equivalent Sm(2) and eight equivalent Sm(1) atoms to form SrSm12 cuboctahedra that share corners with four equivalent Sr(1)Sm12 cuboctahedra, corners with eight equivalent Sm(2)Sr4Sm8 cuboctahedra, edges with eight equivalent Sr(1)Sm12 cuboctahedra, edges with sixteen equivalent Sm(1)Sr4Sm8 cuboctahedra, faces with four equivalent Sr(1)Sm12 cuboctahedra, faces with six equivalent Sm(2)Sr4Sm8 cuboctahedra, and faces with eight equivalent Sm(1)Sr4Sm8 cuboctahedra. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to four equivalent Sr(1), four equivalent Sm(1), and four equivalent Sm(2) atoms to form SmSr4Sm8 cuboctahedra that share corners with twelve equivalent Sm(1)Sr4Sm8 cuboctahedra, edges with eight equivalent Sr(1)Sm12 cuboctahedra, edges with eight equivalent Sm(1)Sr4Sm8 cuboctahedra, edges with eight equivalent Sm(2)Sr4Sm8 cuboctahedra, faces with four equivalent Sr(1)Sm12 cuboctahedra, faces with four equivalent Sm(2)Sr4Sm8 cuboctahedra, and faces with ten equivalent Sm(1)Sr4Sm8 cuboctahedra. In the second Sm site, Sm(2) is bonded to four equivalent Sr(1) and eight equivalent Sm(1) atoms to form SmSr4Sm8 cuboctahedra that share corners with four equivalent Sm(2)Sr4Sm8 cuboctahedra, corners with eight equivalent Sr(1)Sm12 cuboctahedra, edges with eight equivalent Sm(2)Sr4Sm8 cuboctahedra, edges with sixteen equivalent Sm(1)Sr4Sm8 cuboctahedra, faces with four equivalent Sm(2)Sr4Sm8 cuboctahedra, faces with six equivalent Sr(1)Sm12 cuboctahedra, and faces with eight equivalent Sm(1)Sr4Sm8 cuboctahedra. is represented by the CIF card [CIF]
data_SrSm3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.502
_cell_length_b   6.502
_cell_length_c   6.502
_cell_angle_alpha   131.888
_cell_angle_beta   131.888
_cell_angle_gamma   70.406
_symmetry_Int_Tables_number   1
_cell_volume   149.271
_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
  Sr  Sr0  1  0.000  0.000  0.000  1.0
  Sm  Sm1  1  0.750  0.250  0.500  1.0
  Sm  Sm2  1  0.250  0.750  0.500  1.0
  Sm  Sm3  1  0.500  0.500  0.000  1.0
[/CIF]
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The structure described by SrSm3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. Sr(1) is bonded to four equivalent Sm(2) and eight equivalent Sm(1) atoms to form SrSm12 cuboctahedra that share corners with four equivalent Sr(1)Sm12 cuboctahedra, corners with eight equivalent Sm(2)Sr4Sm8 cuboctahedra, edges with eight equivalent Sr(1)Sm12 cuboctahedra, edges with sixteen equivalent Sm(1)Sr4Sm8 cuboctahedra, faces with four equivalent Sr(1)Sm12 cuboctahedra, faces with six equivalent Sm(2)Sr4Sm8 cuboctahedra, and faces with eight equivalent Sm(1)Sr4Sm8 cuboctahedra. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to four equivalent Sr(1), four equivalent Sm(1), and four equivalent Sm(2) atoms to form SmSr4Sm8 cuboctahedra that share corners with twelve equivalent Sm(1)Sr4Sm8 cuboctahedra, edges with eight equivalent Sr(1)Sm12 cuboctahedra, edges with eight equivalent Sm(1)Sr4Sm8 cuboctahedra, edges with eight equivalent Sm(2)Sr4Sm8 cuboctahedra, faces with four equivalent Sr(1)Sm12 cuboctahedra, faces with four equivalent Sm(2)Sr4Sm8 cuboctahedra, and faces with ten equivalent Sm(1)Sr4Sm8 cuboctahedra. In the second Sm site, Sm(2) is bonded to four equivalent Sr(1) and eight equivalent Sm(1) atoms to form SmSr4Sm8 cuboctahedra that share corners with four equivalent Sm(2)Sr4Sm8 cuboctahedra, corners with eight equivalent Sr(1)Sm12 cuboctahedra, edges with eight equivalent Sm(2)Sr4Sm8 cuboctahedra, edges with sixteen equivalent Sm(1)Sr4Sm8 cuboctahedra, faces with four equivalent Sm(2)Sr4Sm8 cuboctahedra, faces with six equivalent Sr(1)Sm12 cuboctahedra, and faces with eight equivalent Sm(1)Sr4Sm8 cuboctahedra. is represented by the CIF card [CIF]
data_SrSm3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.502
_cell_length_b   6.502
_cell_length_c   6.502
_cell_angle_alpha   131.888
_cell_angle_beta   131.888
_cell_angle_gamma   70.406
_symmetry_Int_Tables_number   1
_cell_volume   149.271
_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
  Sr  Sr0  1  0.000  0.000  0.000  1.0
  Sm  Sm1  1  0.750  0.250  0.500  1.0
  Sm  Sm2  1  0.250  0.750  0.500  1.0
  Sm  Sm3  1  0.500  0.500  0.000  1.0
[/CIF]
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