The structure described by La5Tl3 crystallizes in the tetragonal I4/mcm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 6-coordinate geometry to two equivalent Tl(2) and four equivalent Tl(1) atoms. In the second La site, La(2) is bonded in a 6-coordinate geometry to two equivalent La(2) and four equivalent Tl(1) atoms. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 10-coordinate geometry to two equivalent La(2) and eight equivalent La(1) atoms. In the second Tl site, Tl(2) is bonded in a 10-coordinate geometry to eight equivalent La(1) and two equivalent Tl(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_La5Tl3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.393
_cell_length_b   9.650
_cell_length_c   9.650
_cell_angle_alpha   83.701
_cell_angle_beta   70.657
_cell_angle_gamma   70.657
_symmetry_Int_Tables_number   1
_cell_volume   530.033
_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
  La  La0  1  0.221  0.696  0.861  1.0
  La  La1  1  0.779  0.304  0.139  1.0
  La  La2  1  0.279  0.139  0.304  1.0
  La  La3  1  0.721  0.861  0.696  1.0
  La  La4  1  0.083  0.139  0.696  1.0
  La  La5  1  0.917  0.861  0.304  1.0
  La  La6  1  0.583  0.696  0.139  1.0
  La  La7  1  0.417  0.304  0.861  1.0
  La  La8  1  0.750  0.500  0.500  1.0
  La  La9  1  0.250  0.500  0.500  1.0
  Tl  Tl10  1  0.663  0.173  0.500  1.0
  Tl  Tl11  1  0.337  0.827  0.500  1.0
  Tl  Tl12  1  0.837  0.500  0.827  1.0
  Tl  Tl13  1  0.163  0.500  0.173  1.0
  Tl  Tl14  1  0.250  0.000  0.000  1.0
  Tl  Tl15  1  0.750  0.000  0.000  1.0
[/CIF]
.
The structure described by La5Tl3 crystallizes in the tetragonal I4/mcm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 6-coordinate geometry to two equivalent Tl(2) and four equivalent Tl(1) atoms. In the second La site, La(2) is bonded in a 6-coordinate geometry to two equivalent La(2) and four equivalent Tl(1) atoms. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 10-coordinate geometry to two equivalent La(2) and eight equivalent La(1) atoms. In the second Tl site, Tl(2) is bonded in a 10-coordinate geometry to eight equivalent La(1) and two equivalent Tl(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_La5Tl3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.393
_cell_length_b   9.650
_cell_length_c   9.650
_cell_angle_alpha   83.701
_cell_angle_beta   70.657
_cell_angle_gamma   70.657
_symmetry_Int_Tables_number   1
_cell_volume   530.033
_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
  La  La0  1  0.221  0.696  0.861  1.0
  La  La1  1  0.779  0.304  0.139  1.0
  La  La2  1  0.279  0.139  0.304  1.0
  La  La3  1  0.721  0.861  0.696  1.0
  La  La4  1  0.083  0.139  0.696  1.0
  La  La5  1  0.917  0.861  0.304  1.0
  La  La6  1  0.583  0.696  0.139  1.0
  La  La7  1  0.417  0.304  0.861  1.0
  La  La8  1  0.750  0.500  0.500  1.0
  La  La9  1  0.250  0.500  0.500  1.0
  Tl  Tl10  1  0.663  0.173  0.500  1.0
  Tl  Tl11  1  0.337  0.827  0.500  1.0
  Tl  Tl12  1  0.837  0.500  0.827  1.0
  Tl  Tl13  1  0.163  0.500  0.173  1.0
  Tl  Tl14  1  0.250  0.000  0.000  1.0
  Tl  Tl15  1  0.750  0.000  0.000  1.0
[/CIF]
.