The crystal structure described by La2Ir3Sb4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 17-coordinate geometry to two equivalent Ir(3), three equivalent Ir(1), three equivalent Ir(2), one Sb(2), two equivalent Sb(1), three equivalent Sb(3), and three equivalent Sb(4) atoms. In the second La site, La(2) is bonded in a 15-coordinate geometry to one Ir(1), two equivalent Ir(2), three equivalent Ir(3), one Sb(4), two equivalent Sb(3), three equivalent Sb(1), and three equivalent Sb(2) atoms. There are three inequivalent Ir sites. In the first Ir site, Ir(3) is bonded in a 10-coordinate geometry to two equivalent La(1), three equivalent La(2), one Sb(1), one Sb(3), one Sb(4), and two equivalent Sb(2) atoms. In the second Ir site, Ir(1) is bonded in a 8-coordinate geometry to one La(2), three equivalent La(1), one Sb(1), and three equivalent Sb(3) atoms. In the third Ir site, Ir(2) is bonded in a 5-coordinate geometry to two equivalent La(2), three equivalent La(1), one Sb(1), one Sb(2), and three equivalent Sb(4) atoms. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 7-coordinate geometry to two equivalent La(1), three equivalent La(2), one Ir(1), one Ir(2), and one Ir(3) atom. In the second Sb site, Sb(2) is bonded in a 7-coordinate geometry to one La(1), three equivalent La(2), one Ir(2), and two equivalent Ir(3) atoms. In the third Sb site, Sb(3) is bonded in a 8-coordinate geometry to two equivalent La(2), three equivalent La(1), one Ir(3), and three equivalent Ir(1) atoms. In the fourth Sb site, Sb(4) is bonded in a 8-coordinate geometry to one La(2), three equivalent La(1), one Ir(3), and three equivalent Ir(2) atoms. is represented by the CIF file [CIF]
data_La2Sb4Ir3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.638
_cell_length_b   11.095
_cell_length_c   16.430
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   845.478
_cell_formula_units_Z   4
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  0.250  0.749  0.506  1.0
  La  La1  1  0.250  0.751  0.006  1.0
  La  La2  1  0.750  0.251  0.494  1.0
  La  La3  1  0.750  0.249  0.994  1.0
  La  La4  1  0.250  0.588  0.750  1.0
  La  La5  1  0.250  0.912  0.250  1.0
  La  La6  1  0.750  0.412  0.250  1.0
  La  La7  1  0.750  0.088  0.750  1.0
  Sb  Sb8  1  0.250  0.276  0.651  1.0
  Sb  Sb9  1  0.250  0.224  0.151  1.0
  Sb  Sb10  1  0.750  0.724  0.349  1.0
  Sb  Sb11  1  0.750  0.776  0.849  1.0
  Sb  Sb12  1  0.250  0.885  0.708  1.0
  Sb  Sb13  1  0.250  0.615  0.208  1.0
  Sb  Sb14  1  0.750  0.115  0.292  1.0
  Sb  Sb15  1  0.750  0.385  0.792  1.0
  Sb  Sb16  1  0.250  0.062  0.896  1.0
  Sb  Sb17  1  0.250  0.438  0.396  1.0
  Sb  Sb18  1  0.750  0.938  0.104  1.0
  Sb  Sb19  1  0.750  0.562  0.604  1.0
  Sb  Sb20  1  0.250  0.450  0.932  1.0
  Sb  Sb21  1  0.250  0.050  0.432  1.0
  Sb  Sb22  1  0.750  0.550  0.068  1.0
  Sb  Sb23  1  0.750  0.950  0.568  1.0
  Ir  Ir24  1  0.250  0.465  0.557  1.0
  Ir  Ir25  1  0.250  0.035  0.057  1.0
  Ir  Ir26  1  0.750  0.535  0.443  1.0
  Ir  Ir27  1  0.750  0.965  0.943  1.0
  Ir  Ir28  1  0.250  0.057  0.592  1.0
  Ir  Ir29  1  0.250  0.443  0.092  1.0
  Ir  Ir30  1  0.750  0.943  0.408  1.0
  Ir  Ir31  1  0.750  0.557  0.908  1.0
  Ir  Ir32  1  0.250  0.277  0.819  1.0
  Ir  Ir33  1  0.250  0.223  0.319  1.0
  Ir  Ir34  1  0.750  0.723  0.181  1.0
  Ir  Ir35  1  0.750  0.777  0.681  1.0
[/CIF]
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The crystal structure described by La2Ir3Sb4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 17-coordinate geometry to two equivalent Ir(3), three equivalent Ir(1), three equivalent Ir(2), one Sb(2), two equivalent Sb(1), three equivalent Sb(3), and three equivalent Sb(4) atoms. In the second La site, La(2) is bonded in a 15-coordinate geometry to one Ir(1), two equivalent Ir(2), three equivalent Ir(3), one Sb(4), two equivalent Sb(3), three equivalent Sb(1), and three equivalent Sb(2) atoms. There are three inequivalent Ir sites. In the first Ir site, Ir(3) is bonded in a 10-coordinate geometry to two equivalent La(1), three equivalent La(2), one Sb(1), one Sb(3), one Sb(4), and two equivalent Sb(2) atoms. In the second Ir site, Ir(1) is bonded in a 8-coordinate geometry to one La(2), three equivalent La(1), one Sb(1), and three equivalent Sb(3) atoms. In the third Ir site, Ir(2) is bonded in a 5-coordinate geometry to two equivalent La(2), three equivalent La(1), one Sb(1), one Sb(2), and three equivalent Sb(4) atoms. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 7-coordinate geometry to two equivalent La(1), three equivalent La(2), one Ir(1), one Ir(2), and one Ir(3) atom. In the second Sb site, Sb(2) is bonded in a 7-coordinate geometry to one La(1), three equivalent La(2), one Ir(2), and two equivalent Ir(3) atoms. In the third Sb site, Sb(3) is bonded in a 8-coordinate geometry to two equivalent La(2), three equivalent La(1), one Ir(3), and three equivalent Ir(1) atoms. In the fourth Sb site, Sb(4) is bonded in a 8-coordinate geometry to one La(2), three equivalent La(1), one Ir(3), and three equivalent Ir(2) atoms. is represented by the CIF file [CIF]
data_La2Sb4Ir3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.638
_cell_length_b   11.095
_cell_length_c   16.430
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   845.478
_cell_formula_units_Z   4
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  0.250  0.749  0.506  1.0
  La  La1  1  0.250  0.751  0.006  1.0
  La  La2  1  0.750  0.251  0.494  1.0
  La  La3  1  0.750  0.249  0.994  1.0
  La  La4  1  0.250  0.588  0.750  1.0
  La  La5  1  0.250  0.912  0.250  1.0
  La  La6  1  0.750  0.412  0.250  1.0
  La  La7  1  0.750  0.088  0.750  1.0
  Sb  Sb8  1  0.250  0.276  0.651  1.0
  Sb  Sb9  1  0.250  0.224  0.151  1.0
  Sb  Sb10  1  0.750  0.724  0.349  1.0
  Sb  Sb11  1  0.750  0.776  0.849  1.0
  Sb  Sb12  1  0.250  0.885  0.708  1.0
  Sb  Sb13  1  0.250  0.615  0.208  1.0
  Sb  Sb14  1  0.750  0.115  0.292  1.0
  Sb  Sb15  1  0.750  0.385  0.792  1.0
  Sb  Sb16  1  0.250  0.062  0.896  1.0
  Sb  Sb17  1  0.250  0.438  0.396  1.0
  Sb  Sb18  1  0.750  0.938  0.104  1.0
  Sb  Sb19  1  0.750  0.562  0.604  1.0
  Sb  Sb20  1  0.250  0.450  0.932  1.0
  Sb  Sb21  1  0.250  0.050  0.432  1.0
  Sb  Sb22  1  0.750  0.550  0.068  1.0
  Sb  Sb23  1  0.750  0.950  0.568  1.0
  Ir  Ir24  1  0.250  0.465  0.557  1.0
  Ir  Ir25  1  0.250  0.035  0.057  1.0
  Ir  Ir26  1  0.750  0.535  0.443  1.0
  Ir  Ir27  1  0.750  0.965  0.943  1.0
  Ir  Ir28  1  0.250  0.057  0.592  1.0
  Ir  Ir29  1  0.250  0.443  0.092  1.0
  Ir  Ir30  1  0.750  0.943  0.408  1.0
  Ir  Ir31  1  0.750  0.557  0.908  1.0
  Ir  Ir32  1  0.250  0.277  0.819  1.0
  Ir  Ir33  1  0.250  0.223  0.319  1.0
  Ir  Ir34  1  0.750  0.723  0.181  1.0
  Ir  Ir35  1  0.750  0.777  0.681  1.0
[/CIF]
.