The crystal structure described by La3SiBr3 crystallizes in the cubic I4_132 space group. La(1) is bonded to two equivalent Si(1) and four equivalent Br(1) atoms to form a mixture of edge and corner-sharing LaSi2Br4 octahedra. The corner-sharing octahedral tilt angles range from 3-6°. Si(1) is bonded to six equivalent La(1) atoms to form edge-sharing SiLa6 octahedra. Br(1) is bonded in a rectangular see-saw-like geometry to four equivalent La(1) atoms. is represented by the CIF file [CIF]
data_La3SiBr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.611
_cell_length_b   10.611
_cell_length_c   10.611
_cell_angle_alpha   109.471
_cell_angle_beta   109.470
_cell_angle_gamma   109.473
_symmetry_Int_Tables_number   1
_cell_volume   919.737
_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  0.490  0.750  0.010  1.0
  La  La1  1  0.750  0.240  0.260  1.0
  La  La2  1  0.240  0.260  0.750  1.0
  La  La3  1  0.481  0.490  0.240  1.0
  La  La4  1  0.260  0.010  0.019  1.0
  La  La5  1  0.240  0.481  0.490  1.0
  La  La6  1  0.010  0.019  0.260  1.0
  La  La7  1  0.010  0.490  0.750  1.0
  La  La8  1  0.490  0.240  0.481  1.0
  La  La9  1  0.750  0.010  0.491  1.0
  La  La10  1  0.019  0.260  0.010  1.0
  La  La11  1  0.260  0.750  0.240  1.0
  Si  Si12  1  0.250  0.250  0.250  1.0
  Si  Si13  1  0.000  0.250  0.500  1.0
  Si  Si14  1  0.250  0.500  0.000  1.0
  Si  Si15  1  0.500  1.000  0.250  1.0
  Br  Br16  1  0.995  0.989  0.745  1.0
  Br  Br17  1  0.755  0.745  0.250  1.0
  Br  Br18  1  0.989  0.745  0.995  1.0
  Br  Br19  1  0.250  0.995  0.505  1.0
  Br  Br20  1  0.745  0.995  0.989  1.0
  Br  Br21  1  0.505  0.250  0.995  1.0
  Br  Br22  1  0.745  0.250  0.755  1.0
  Br  Br23  1  0.505  0.755  0.511  1.0
  Br  Br24  1  0.755  0.511  0.505  1.0
  Br  Br25  1  0.250  0.755  0.745  1.0
  Br  Br26  1  0.511  0.505  0.755  1.0
  Br  Br27  1  0.995  0.505  0.250  1.0
[/CIF]
.
The crystal structure described by La3SiBr3 crystallizes in the cubic I4_132 space group. La(1) is bonded to two equivalent Si(1) and four equivalent Br(1) atoms to form a mixture of edge and corner-sharing LaSi2Br4 octahedra. The corner-sharing octahedral tilt angles range from 3-6°. Si(1) is bonded to six equivalent La(1) atoms to form edge-sharing SiLa6 octahedra. Br(1) is bonded in a rectangular see-saw-like geometry to four equivalent La(1) atoms. is represented by the CIF file [CIF]
data_La3SiBr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.611
_cell_length_b   10.611
_cell_length_c   10.611
_cell_angle_alpha   109.471
_cell_angle_beta   109.470
_cell_angle_gamma   109.473
_symmetry_Int_Tables_number   1
_cell_volume   919.737
_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  0.490  0.750  0.010  1.0
  La  La1  1  0.750  0.240  0.260  1.0
  La  La2  1  0.240  0.260  0.750  1.0
  La  La3  1  0.481  0.490  0.240  1.0
  La  La4  1  0.260  0.010  0.019  1.0
  La  La5  1  0.240  0.481  0.490  1.0
  La  La6  1  0.010  0.019  0.260  1.0
  La  La7  1  0.010  0.490  0.750  1.0
  La  La8  1  0.490  0.240  0.481  1.0
  La  La9  1  0.750  0.010  0.491  1.0
  La  La10  1  0.019  0.260  0.010  1.0
  La  La11  1  0.260  0.750  0.240  1.0
  Si  Si12  1  0.250  0.250  0.250  1.0
  Si  Si13  1  0.000  0.250  0.500  1.0
  Si  Si14  1  0.250  0.500  0.000  1.0
  Si  Si15  1  0.500  1.000  0.250  1.0
  Br  Br16  1  0.995  0.989  0.745  1.0
  Br  Br17  1  0.755  0.745  0.250  1.0
  Br  Br18  1  0.989  0.745  0.995  1.0
  Br  Br19  1  0.250  0.995  0.505  1.0
  Br  Br20  1  0.745  0.995  0.989  1.0
  Br  Br21  1  0.505  0.250  0.995  1.0
  Br  Br22  1  0.745  0.250  0.755  1.0
  Br  Br23  1  0.505  0.755  0.511  1.0
  Br  Br24  1  0.755  0.511  0.505  1.0
  Br  Br25  1  0.250  0.755  0.745  1.0
  Br  Br26  1  0.511  0.505  0.755  1.0
  Br  Br27  1  0.995  0.505  0.250  1.0
[/CIF]
.