The structure described by LaF3 is Sodium arsenide structured and crystallizes in the hexagonal P6_3/mmc space group. La(1) is bonded in a 11-coordinate geometry to three equivalent F(2) and eight equivalent F(1) atoms. There are two inequivalent F sites. In the first F site, F(1) is bonded to four equivalent La(1) atoms to form a mixture of distorted face, corner, and edge-sharing FLa4 tetrahedra. In the second F site, F(2) is bonded in a trigonal planar geometry to three equivalent La(1) atoms. is represented by the CIF file [CIF]
data_LaF3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.150
_cell_length_b   4.150
_cell_length_c   7.326
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   109.268
_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  0.667  0.333  0.750  1.0
  La  La1  1  0.333  0.667  0.250  1.0
  F  F2  1  0.333  0.667  0.920  1.0
  F  F3  1  0.667  0.333  0.420  1.0
  F  F4  1  0.000  0.000  0.250  1.0
  F  F5  1  0.000  0.000  0.750  1.0
  F  F6  1  0.333  0.667  0.580  1.0
  F  F7  1  0.667  0.333  0.080  1.0
[/CIF]
.
The structure described by LaF3 is Sodium arsenide structured and crystallizes in the hexagonal P6_3/mmc space group. La(1) is bonded in a 11-coordinate geometry to three equivalent F(2) and eight equivalent F(1) atoms. There are two inequivalent F sites. In the first F site, F(1) is bonded to four equivalent La(1) atoms to form a mixture of distorted face, corner, and edge-sharing FLa4 tetrahedra. In the second F site, F(2) is bonded in a trigonal planar geometry to three equivalent La(1) atoms. is represented by the CIF file [CIF]
data_LaF3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.150
_cell_length_b   4.150
_cell_length_c   7.326
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   109.268
_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  0.667  0.333  0.750  1.0
  La  La1  1  0.333  0.667  0.250  1.0
  F  F2  1  0.333  0.667  0.920  1.0
  F  F3  1  0.667  0.333  0.420  1.0
  F  F4  1  0.000  0.000  0.250  1.0
  F  F5  1  0.000  0.000  0.750  1.0
  F  F6  1  0.333  0.667  0.580  1.0
  F  F7  1  0.667  0.333  0.080  1.0
[/CIF]
.