The compound described by La12Co6Pb crystallizes in the orthorhombic Immm space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 3-coordinate geometry to one Co(2), two equivalent Co(1), and one Pb(1) atom. In the second La site, La(2) is bonded in a 3-coordinate geometry to one Co(3), two equivalent Co(2), and one Pb(1) atom. In the third La site, La(3) is bonded in a 4-coordinate geometry to one Co(1), two equivalent Co(3), and one Pb(1) atom. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 7-coordinate geometry to two equivalent La(3), four equivalent La(1), and one Co(1) atom. In the second Co site, Co(2) is bonded in a 7-coordinate geometry to two equivalent La(1), four equivalent La(2), and one Co(2) atom. In the third Co site, Co(3) is bonded in a 7-coordinate geometry to two equivalent La(2), four equivalent La(3), and one Co(3) atom. Pb(1) is bonded in a cuboctahedral geometry to four equivalent La(1), four equivalent La(2), and four equivalent La(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_La12Co6Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.854
_cell_length_b   8.854
_cell_length_c   8.854
_cell_angle_alpha   109.376
_cell_angle_beta   109.483
_cell_angle_gamma   109.555
_symmetry_Int_Tables_number   1
_cell_volume   534.294
_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  0.809  0.688  0.497  1.0
  La  La1  1  0.191  0.312  0.503  1.0
  La  La2  1  0.191  0.688  0.879  1.0
  La  La3  1  0.809  0.312  0.121  1.0
  La  La4  1  0.688  0.496  0.808  1.0
  La  La5  1  0.312  0.504  0.192  1.0
  La  La6  1  0.688  0.880  0.192  1.0
  La  La7  1  0.312  0.120  0.808  1.0
  La  La8  1  0.497  0.809  0.689  1.0
  La  La9  1  0.502  0.191  0.311  1.0
  La  La10  1  0.120  0.809  0.311  1.0
  La  La11  1  0.880  0.191  0.689  1.0
  Co  Co12  1  0.889  0.389  0.500  1.0
  Co  Co13  1  0.111  0.611  0.500  1.0
  Co  Co14  1  0.389  0.500  0.889  1.0
  Co  Co15  1  0.611  0.500  0.111  1.0
  Co  Co16  1  0.500  0.889  0.389  1.0
  Co  Co17  1  0.500  0.111  0.611  1.0
  Pb  Pb18  1  0.000  0.000  0.000  1.0
[/CIF]
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The compound described by La12Co6Pb crystallizes in the orthorhombic Immm space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 3-coordinate geometry to one Co(2), two equivalent Co(1), and one Pb(1) atom. In the second La site, La(2) is bonded in a 3-coordinate geometry to one Co(3), two equivalent Co(2), and one Pb(1) atom. In the third La site, La(3) is bonded in a 4-coordinate geometry to one Co(1), two equivalent Co(3), and one Pb(1) atom. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 7-coordinate geometry to two equivalent La(3), four equivalent La(1), and one Co(1) atom. In the second Co site, Co(2) is bonded in a 7-coordinate geometry to two equivalent La(1), four equivalent La(2), and one Co(2) atom. In the third Co site, Co(3) is bonded in a 7-coordinate geometry to two equivalent La(2), four equivalent La(3), and one Co(3) atom. Pb(1) is bonded in a cuboctahedral geometry to four equivalent La(1), four equivalent La(2), and four equivalent La(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_La12Co6Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.854
_cell_length_b   8.854
_cell_length_c   8.854
_cell_angle_alpha   109.376
_cell_angle_beta   109.483
_cell_angle_gamma   109.555
_symmetry_Int_Tables_number   1
_cell_volume   534.294
_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  0.809  0.688  0.497  1.0
  La  La1  1  0.191  0.312  0.503  1.0
  La  La2  1  0.191  0.688  0.879  1.0
  La  La3  1  0.809  0.312  0.121  1.0
  La  La4  1  0.688  0.496  0.808  1.0
  La  La5  1  0.312  0.504  0.192  1.0
  La  La6  1  0.688  0.880  0.192  1.0
  La  La7  1  0.312  0.120  0.808  1.0
  La  La8  1  0.497  0.809  0.689  1.0
  La  La9  1  0.502  0.191  0.311  1.0
  La  La10  1  0.120  0.809  0.311  1.0
  La  La11  1  0.880  0.191  0.689  1.0
  Co  Co12  1  0.889  0.389  0.500  1.0
  Co  Co13  1  0.111  0.611  0.500  1.0
  Co  Co14  1  0.389  0.500  0.889  1.0
  Co  Co15  1  0.611  0.500  0.111  1.0
  Co  Co16  1  0.500  0.889  0.389  1.0
  Co  Co17  1  0.500  0.111  0.611  1.0
  Pb  Pb18  1  0.000  0.000  0.000  1.0
[/CIF]
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