The material structure described by La3Si2 crystallizes in the tetragonal P4/mbm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a distorted hexagonal planar geometry to six equivalent Si(1) atoms. In the second La site, La(2) is bonded in a square co-planar geometry to four equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to two equivalent La(2), six equivalent La(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_La3Si2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.459
_cell_length_b   7.956
_cell_length_c   7.956
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   282.250
_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  0.500  0.676  0.824  1.0
  La  La1  1  0.500  0.824  0.324  1.0
  La  La2  1  0.500  0.324  0.176  1.0
  La  La3  1  0.500  0.176  0.676  1.0
  La  La4  1  0.000  0.500  0.500  1.0
  La  La5  1  0.000  0.000  0.000  1.0
  Si  Si6  1  0.000  0.609  0.109  1.0
  Si  Si7  1  0.000  0.891  0.609  1.0
  Si  Si8  1  0.000  0.109  0.391  1.0
  Si  Si9  1  0.000  0.391  0.891  1.0
[/CIF]
.
The material structure described by La3Si2 crystallizes in the tetragonal P4/mbm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a distorted hexagonal planar geometry to six equivalent Si(1) atoms. In the second La site, La(2) is bonded in a square co-planar geometry to four equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to two equivalent La(2), six equivalent La(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_La3Si2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.459
_cell_length_b   7.956
_cell_length_c   7.956
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   282.250
_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  0.500  0.676  0.824  1.0
  La  La1  1  0.500  0.824  0.324  1.0
  La  La2  1  0.500  0.324  0.176  1.0
  La  La3  1  0.500  0.176  0.676  1.0
  La  La4  1  0.000  0.500  0.500  1.0
  La  La5  1  0.000  0.000  0.000  1.0
  Si  Si6  1  0.000  0.609  0.109  1.0
  Si  Si7  1  0.000  0.891  0.609  1.0
  Si  Si8  1  0.000  0.109  0.391  1.0
  Si  Si9  1  0.000  0.391  0.891  1.0
[/CIF]
.