The crystal structure described by LaSi crystallizes in the orthorhombic Cmcm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. In the second La site, La(2) is bonded in a 8-coordinate geometry to eight equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to three equivalent La(1), four equivalent La(2), and two equivalent Si(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_LaSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.605
_cell_length_b   6.646
_cell_length_c   7.109
_cell_angle_alpha   90.000
_cell_angle_beta   108.898
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   205.839
_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  0.725  0.750  0.450  1.0
  La  La1  1  0.275  0.250  0.550  1.0
  La  La2  1  0.449  0.750  0.897  1.0
  La  La3  1  0.551  0.250  0.103  1.0
  Si  Si4  1  0.909  0.064  0.817  1.0
  Si  Si5  1  0.091  0.936  0.183  1.0
  Si  Si6  1  0.091  0.564  0.183  1.0
  Si  Si7  1  0.909  0.436  0.817  1.0
[/CIF]
.
The crystal structure described by LaSi crystallizes in the orthorhombic Cmcm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. In the second La site, La(2) is bonded in a 8-coordinate geometry to eight equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to three equivalent La(1), four equivalent La(2), and two equivalent Si(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_LaSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.605
_cell_length_b   6.646
_cell_length_c   7.109
_cell_angle_alpha   90.000
_cell_angle_beta   108.898
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   205.839
_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  0.725  0.750  0.450  1.0
  La  La1  1  0.275  0.250  0.550  1.0
  La  La2  1  0.449  0.750  0.897  1.0
  La  La3  1  0.551  0.250  0.103  1.0
  Si  Si4  1  0.909  0.064  0.817  1.0
  Si  Si5  1  0.091  0.936  0.183  1.0
  Si  Si6  1  0.091  0.564  0.183  1.0
  Si  Si7  1  0.909  0.436  0.817  1.0
[/CIF]
.