The material structure described by SmPtGa3 crystallizes in the tetragonal I-4m2 space group. Sm(1) is bonded in a 16-coordinate geometry to four equivalent Pt(1), four equivalent Ga(2), and eight equivalent Ga(1) atoms. Pt(1) is bonded to four equivalent Sm(1), four equivalent Ga(1), and four equivalent Ga(2) atoms to form distorted PtSm4Ga8 cuboctahedra that share corners with four equivalent Ga(2)Sm4Ga4Pt4 cuboctahedra, corners with twelve equivalent Pt(1)Sm4Ga8 cuboctahedra, edges with two equivalent Ga(2)Sm4Ga4Pt4 cuboctahedra, faces with four equivalent Pt(1)Sm4Ga8 cuboctahedra, and faces with four equivalent Ga(2)Sm4Ga4Pt4 cuboctahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to four equivalent Sm(1), two equivalent Pt(1), one Ga(1), and two equivalent Ga(2) atoms. In the second Ga site, Ga(2) is bonded to four equivalent Sm(1), four equivalent Pt(1), and four equivalent Ga(1) atoms to form GaSm4Ga4Pt4 cuboctahedra that share corners with four equivalent Pt(1)Sm4Ga8 cuboctahedra, corners with twelve equivalent Ga(2)Sm4Ga4Pt4 cuboctahedra, edges with two equivalent Pt(1)Sm4Ga8 cuboctahedra, faces with four equivalent Pt(1)Sm4Ga8 cuboctahedra, and faces with four equivalent Ga(2)Sm4Ga4Pt4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmGa3Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.140
_cell_length_b   6.140
_cell_length_c   6.140
_cell_angle_alpha   140.561
_cell_angle_beta   140.561
_cell_angle_gamma   57.003
_symmetry_Int_Tables_number   1
_cell_volume   92.646
_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  0.000  0.000  0.000  1.0
  Ga  Ga1  1  0.613  0.613  0.000  1.0
  Ga  Ga2  1  0.387  0.387  0.000  1.0
  Ga  Ga3  1  0.750  0.250  0.500  1.0
  Pt  Pt4  1  0.250  0.750  0.500  1.0
[/CIF]
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The material structure described by SmPtGa3 crystallizes in the tetragonal I-4m2 space group. Sm(1) is bonded in a 16-coordinate geometry to four equivalent Pt(1), four equivalent Ga(2), and eight equivalent Ga(1) atoms. Pt(1) is bonded to four equivalent Sm(1), four equivalent Ga(1), and four equivalent Ga(2) atoms to form distorted PtSm4Ga8 cuboctahedra that share corners with four equivalent Ga(2)Sm4Ga4Pt4 cuboctahedra, corners with twelve equivalent Pt(1)Sm4Ga8 cuboctahedra, edges with two equivalent Ga(2)Sm4Ga4Pt4 cuboctahedra, faces with four equivalent Pt(1)Sm4Ga8 cuboctahedra, and faces with four equivalent Ga(2)Sm4Ga4Pt4 cuboctahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to four equivalent Sm(1), two equivalent Pt(1), one Ga(1), and two equivalent Ga(2) atoms. In the second Ga site, Ga(2) is bonded to four equivalent Sm(1), four equivalent Pt(1), and four equivalent Ga(1) atoms to form GaSm4Ga4Pt4 cuboctahedra that share corners with four equivalent Pt(1)Sm4Ga8 cuboctahedra, corners with twelve equivalent Ga(2)Sm4Ga4Pt4 cuboctahedra, edges with two equivalent Pt(1)Sm4Ga8 cuboctahedra, faces with four equivalent Pt(1)Sm4Ga8 cuboctahedra, and faces with four equivalent Ga(2)Sm4Ga4Pt4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmGa3Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.140
_cell_length_b   6.140
_cell_length_c   6.140
_cell_angle_alpha   140.561
_cell_angle_beta   140.561
_cell_angle_gamma   57.003
_symmetry_Int_Tables_number   1
_cell_volume   92.646
_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  0.000  0.000  0.000  1.0
  Ga  Ga1  1  0.613  0.613  0.000  1.0
  Ga  Ga2  1  0.387  0.387  0.000  1.0
  Ga  Ga3  1  0.750  0.250  0.500  1.0
  Pt  Pt4  1  0.250  0.750  0.500  1.0
[/CIF]
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