The material described by LaPtGa3 crystallizes in the tetragonal I-4m2 space group. La(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 La(1), four equivalent Ga(1), and four equivalent Ga(2) atoms to form distorted PtLa4Ga8 tetrahedra that share corners with four equivalent Ga(2)La4Ga4Pt4 cuboctahedra, corners with twelve equivalent Pt(1)La4Ga8 tetrahedra, edges with two equivalent Ga(2)La4Ga4Pt4 cuboctahedra, faces with four equivalent Ga(2)La4Ga4Pt4 cuboctahedra, and faces with four equivalent Pt(1)La4Ga8 tetrahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to four equivalent La(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 La(1), four equivalent Pt(1), and four equivalent Ga(1) atoms to form GaLa4Ga4Pt4 cuboctahedra that share corners with twelve equivalent Ga(2)La4Ga4Pt4 cuboctahedra, corners with four equivalent Pt(1)La4Ga8 tetrahedra, edges with two equivalent Pt(1)La4Ga8 tetrahedra, faces with four equivalent Ga(2)La4Ga4Pt4 cuboctahedra, and faces with four equivalent Pt(1)La4Ga8 tetrahedra. is represented by the CIF file [CIF]
data_LaGa3Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.099
_cell_length_b   6.099
_cell_length_c   6.099
_cell_angle_alpha   138.647
_cell_angle_beta   138.647
_cell_angle_gamma   59.914
_symmetry_Int_Tables_number   1
_cell_volume   98.048
_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
  La  La0  1  0.000  0.000  0.000  1.0
  Ga  Ga1  1  0.619  0.619  0.000  1.0
  Ga  Ga2  1  0.381  0.381  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 described by LaPtGa3 crystallizes in the tetragonal I-4m2 space group. La(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 La(1), four equivalent Ga(1), and four equivalent Ga(2) atoms to form distorted PtLa4Ga8 tetrahedra that share corners with four equivalent Ga(2)La4Ga4Pt4 cuboctahedra, corners with twelve equivalent Pt(1)La4Ga8 tetrahedra, edges with two equivalent Ga(2)La4Ga4Pt4 cuboctahedra, faces with four equivalent Ga(2)La4Ga4Pt4 cuboctahedra, and faces with four equivalent Pt(1)La4Ga8 tetrahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to four equivalent La(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 La(1), four equivalent Pt(1), and four equivalent Ga(1) atoms to form GaLa4Ga4Pt4 cuboctahedra that share corners with twelve equivalent Ga(2)La4Ga4Pt4 cuboctahedra, corners with four equivalent Pt(1)La4Ga8 tetrahedra, edges with two equivalent Pt(1)La4Ga8 tetrahedra, faces with four equivalent Ga(2)La4Ga4Pt4 cuboctahedra, and faces with four equivalent Pt(1)La4Ga8 tetrahedra. is represented by the CIF file [CIF]
data_LaGa3Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.099
_cell_length_b   6.099
_cell_length_c   6.099
_cell_angle_alpha   138.647
_cell_angle_beta   138.647
_cell_angle_gamma   59.914
_symmetry_Int_Tables_number   1
_cell_volume   98.048
_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
  La  La0  1  0.000  0.000  0.000  1.0
  Ga  Ga1  1  0.619  0.619  0.000  1.0
  Ga  Ga2  1  0.381  0.381  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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