data_LaTaPbAu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.22
_cell_length_b   5.22
_cell_length_c   5.22
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaTaPbAu
_chemical_formula_sum   'La1 Ta1 Pb1 Au1'
_cell_volume   100.64
_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  La1  1  0.0  0.0  0.0  1.0
  Ta  Ta3  1  0.85  0.85  0.85  1.0
  Pb  Pb2  1  0.69  0.69  0.69  1.0
  Au  Au0  1  0.54  0.54  0.54  1.0

data_LaTaPbAu
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.22
_cell_length_b   5.22
_cell_length_c   12.79
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   LaTaPbAu
_chemical_formula_sum   'La3 Ta3 Pb3 Au3'
_cell_volume   301.93
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  3  0.0  0.0  0.0  1.0
  Ta  Ta1  3  0.0  0.0  0.15  1.0
  Pb  Pb2  3  0.0  0.0  0.31  1.0
  Au  Au3  3  0.0  0.0  0.46  1.0

La Ta Pb Au
LaTaAuPb crystallizes in the trigonal R3m space group. La(1) is bonded in a 4-coordinate geometry to one Ta(1) and three equivalent Pb(1) atoms. The La(1)-Ta(1) bond length is 1.97 Å. All La(1)-Pb(1) bond lengths are 3.03 Å. Ta(1) is bonded in a 5-coordinate geometry to one La(1), three equivalent Au(1), and one Pb(1) atom. All Ta(1)-Au(1) bond lengths are 3.03 Å. The Ta(1)-Pb(1) bond length is 1.97 Å. Au(1) is bonded to three equivalent Ta(1) and one Pb(1) atom to form distorted AuTa3Pb trigonal pyramids that share corners with three equivalent Pb(1)La3TaAu trigonal bipyramids and corners with six equivalent Au(1)Ta3Pb trigonal pyramids. The Au(1)-Pb(1) bond length is 1.97 Å. Pb(1) is bonded to three equivalent La(1), one Ta(1), and one Au(1) atom to form distorted PbLa3TaAu trigonal bipyramids that share corners with six equivalent Pb(1)La3TaAu trigonal bipyramids and corners with three equivalent Au(1)Ta3Pb trigonal pyramids.