The material described by La6Co13Bi 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 13-coordinate geometry to four equivalent Co(2), four equivalent Co(3), four equivalent Co(4), and one Bi(1) atom. In the second La site, La(2) is bonded in a 6-coordinate geometry to one Co(3), three equivalent Co(4), and two equivalent Bi(1) atoms. There are four inequivalent Co sites. In the first Co site, Co(3) is bonded in a 12-coordinate geometry to one La(2), two equivalent La(1), one Co(1), one Co(3), three equivalent Co(4), and four equivalent Co(2) atoms. In the second Co site, Co(4) is bonded in a 12-coordinate geometry to two equivalent La(1), three equivalent La(2), one Co(1), one Co(4), two equivalent Co(2), and three equivalent Co(3) atoms. In the third Co site, Co(1) is bonded to four equivalent Co(2), four equivalent Co(3), and four equivalent Co(4) atoms to form a mixture of face and corner-sharing CoCo12 cuboctahedra. In the fourth Co site, Co(2) is bonded to two equivalent La(1), one Co(1), two equivalent Co(4), three equivalent Co(2), and four equivalent Co(3) atoms to form distorted CoLa2Co10 cuboctahedra that share  a cornercorner with one Co(1)Co12 cuboctahedra, corners with three equivalent Co(2)La2Co10 cuboctahedra, faces with two equivalent Co(1)Co12 cuboctahedra, and faces with seven equivalent Co(2)La2Co10 cuboctahedra. Bi(1) is bonded in a distorted q6 geometry to two equivalent La(1) and eight equivalent La(2) atoms. is represented by the CIF file [CIF]
data_La6Co13Bi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.973
_cell_length_b   12.973
_cell_length_c   12.973
_cell_angle_alpha   143.574
_cell_angle_beta   143.574
_cell_angle_gamma   52.465
_symmetry_Int_Tables_number   1
_cell_volume   765.344
_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  0.599  0.599  0.000  1.0
  La  La1  1  0.099  0.099  0.000  1.0
  La  La2  1  0.401  0.401  0.000  1.0
  La  La3  1  0.901  0.901  0.000  1.0
  La  La4  1  0.481  0.981  0.819  1.0
  La  La5  1  0.162  0.662  0.181  1.0
  La  La6  1  0.981  0.162  0.500  1.0
  La  La7  1  0.662  0.481  0.500  1.0
  La  La8  1  0.519  0.019  0.181  1.0
  La  La9  1  0.838  0.338  0.819  1.0
  La  La10  1  0.019  0.838  0.500  1.0
  La  La11  1  0.338  0.519  0.500  1.0
  Co  Co12  1  0.500  0.000  0.500  1.0
  Co  Co13  1  0.000  0.500  0.500  1.0
  Co  Co14  1  0.565  0.713  0.278  1.0
  Co  Co15  1  0.435  0.287  0.722  1.0
  Co  Co16  1  0.065  0.787  0.852  1.0
  Co  Co17  1  0.935  0.213  0.148  1.0
  Co  Co18  1  0.287  0.565  0.852  1.0
  Co  Co19  1  0.713  0.435  0.148  1.0
  Co  Co20  1  0.213  0.065  0.278  1.0
  Co  Co21  1  0.787  0.935  0.722  1.0
  Co  Co22  1  0.621  0.121  0.853  1.0
  Co  Co23  1  0.268  0.768  0.147  1.0
  Co  Co24  1  0.121  0.268  0.500  1.0
  Co  Co25  1  0.768  0.621  0.500  1.0
  Co  Co26  1  0.379  0.879  0.147  1.0
  Co  Co27  1  0.732  0.232  0.853  1.0
  Co  Co28  1  0.879  0.732  0.500  1.0
  Co  Co29  1  0.232  0.379  0.500  1.0
  Co  Co30  1  0.798  0.298  0.271  1.0
  Co  Co31  1  0.026  0.526  0.729  1.0
  Co  Co32  1  0.298  0.026  0.500  1.0
  Co  Co33  1  0.526  0.798  0.500  1.0
  Co  Co34  1  0.202  0.702  0.729  1.0
  Co  Co35  1  0.974  0.474  0.271  1.0
  Co  Co36  1  0.702  0.974  0.500  1.0
  Co  Co37  1  0.474  0.202  0.500  1.0
  Bi  Bi38  1  0.250  0.250  0.000  1.0
  Bi  Bi39  1  0.750  0.750  0.000  1.0
[/CIF]
.
The material described by La6Co13Bi 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 13-coordinate geometry to four equivalent Co(2), four equivalent Co(3), four equivalent Co(4), and one Bi(1) atom. In the second La site, La(2) is bonded in a 6-coordinate geometry to one Co(3), three equivalent Co(4), and two equivalent Bi(1) atoms. There are four inequivalent Co sites. In the first Co site, Co(3) is bonded in a 12-coordinate geometry to one La(2), two equivalent La(1), one Co(1), one Co(3), three equivalent Co(4), and four equivalent Co(2) atoms. In the second Co site, Co(4) is bonded in a 12-coordinate geometry to two equivalent La(1), three equivalent La(2), one Co(1), one Co(4), two equivalent Co(2), and three equivalent Co(3) atoms. In the third Co site, Co(1) is bonded to four equivalent Co(2), four equivalent Co(3), and four equivalent Co(4) atoms to form a mixture of face and corner-sharing CoCo12 cuboctahedra. In the fourth Co site, Co(2) is bonded to two equivalent La(1), one Co(1), two equivalent Co(4), three equivalent Co(2), and four equivalent Co(3) atoms to form distorted CoLa2Co10 cuboctahedra that share  a cornercorner with one Co(1)Co12 cuboctahedra, corners with three equivalent Co(2)La2Co10 cuboctahedra, faces with two equivalent Co(1)Co12 cuboctahedra, and faces with seven equivalent Co(2)La2Co10 cuboctahedra. Bi(1) is bonded in a distorted q6 geometry to two equivalent La(1) and eight equivalent La(2) atoms. is represented by the CIF file [CIF]
data_La6Co13Bi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.973
_cell_length_b   12.973
_cell_length_c   12.973
_cell_angle_alpha   143.574
_cell_angle_beta   143.574
_cell_angle_gamma   52.465
_symmetry_Int_Tables_number   1
_cell_volume   765.344
_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  0.599  0.599  0.000  1.0
  La  La1  1  0.099  0.099  0.000  1.0
  La  La2  1  0.401  0.401  0.000  1.0
  La  La3  1  0.901  0.901  0.000  1.0
  La  La4  1  0.481  0.981  0.819  1.0
  La  La5  1  0.162  0.662  0.181  1.0
  La  La6  1  0.981  0.162  0.500  1.0
  La  La7  1  0.662  0.481  0.500  1.0
  La  La8  1  0.519  0.019  0.181  1.0
  La  La9  1  0.838  0.338  0.819  1.0
  La  La10  1  0.019  0.838  0.500  1.0
  La  La11  1  0.338  0.519  0.500  1.0
  Co  Co12  1  0.500  0.000  0.500  1.0
  Co  Co13  1  0.000  0.500  0.500  1.0
  Co  Co14  1  0.565  0.713  0.278  1.0
  Co  Co15  1  0.435  0.287  0.722  1.0
  Co  Co16  1  0.065  0.787  0.852  1.0
  Co  Co17  1  0.935  0.213  0.148  1.0
  Co  Co18  1  0.287  0.565  0.852  1.0
  Co  Co19  1  0.713  0.435  0.148  1.0
  Co  Co20  1  0.213  0.065  0.278  1.0
  Co  Co21  1  0.787  0.935  0.722  1.0
  Co  Co22  1  0.621  0.121  0.853  1.0
  Co  Co23  1  0.268  0.768  0.147  1.0
  Co  Co24  1  0.121  0.268  0.500  1.0
  Co  Co25  1  0.768  0.621  0.500  1.0
  Co  Co26  1  0.379  0.879  0.147  1.0
  Co  Co27  1  0.732  0.232  0.853  1.0
  Co  Co28  1  0.879  0.732  0.500  1.0
  Co  Co29  1  0.232  0.379  0.500  1.0
  Co  Co30  1  0.798  0.298  0.271  1.0
  Co  Co31  1  0.026  0.526  0.729  1.0
  Co  Co32  1  0.298  0.026  0.500  1.0
  Co  Co33  1  0.526  0.798  0.500  1.0
  Co  Co34  1  0.202  0.702  0.729  1.0
  Co  Co35  1  0.974  0.474  0.271  1.0
  Co  Co36  1  0.702  0.974  0.500  1.0
  Co  Co37  1  0.474  0.202  0.500  1.0
  Bi  Bi38  1  0.250  0.250  0.000  1.0
  Bi  Bi39  1  0.750  0.750  0.000  1.0
[/CIF]
.