The crystal structure described by SmF3 is Cementite structured and crystallizes in the orthorhombic Pnma space group. Sm(1) is bonded in a 9-coordinate geometry to three equivalent F(1) and six equivalent F(2) atoms. There are two inequivalent F sites. In the first F site, F(2) is bonded in a distorted trigonal planar geometry to three equivalent Sm(1) atoms. In the second F site, F(1) is bonded in a distorted trigonal planar geometry to three equivalent Sm(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmF3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.377
_cell_length_b   6.646
_cell_length_c   7.025
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   204.353
_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
  Sm  Sm0  1  0.934  0.632  0.750  1.0
  Sm  Sm1  1  0.434  0.868  0.250  1.0
  Sm  Sm2  1  0.566  0.132  0.750  1.0
  Sm  Sm3  1  0.066  0.368  0.250  1.0
  F  F4  1  0.075  0.981  0.750  1.0
  F  F5  1  0.575  0.519  0.250  1.0
  F  F6  1  0.425  0.481  0.750  1.0
  F  F7  1  0.925  0.019  0.250  1.0
  F  F8  1  0.394  0.166  0.065  1.0
  F  F9  1  0.894  0.334  0.935  1.0
  F  F10  1  0.106  0.666  0.435  1.0
  F  F11  1  0.606  0.834  0.565  1.0
  F  F12  1  0.606  0.834  0.935  1.0
  F  F13  1  0.106  0.666  0.065  1.0
  F  F14  1  0.894  0.334  0.565  1.0
  F  F15  1  0.394  0.166  0.435  1.0
[/CIF]
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The crystal structure described by SmF3 is Cementite structured and crystallizes in the orthorhombic Pnma space group. Sm(1) is bonded in a 9-coordinate geometry to three equivalent F(1) and six equivalent F(2) atoms. There are two inequivalent F sites. In the first F site, F(2) is bonded in a distorted trigonal planar geometry to three equivalent Sm(1) atoms. In the second F site, F(1) is bonded in a distorted trigonal planar geometry to three equivalent Sm(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmF3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.377
_cell_length_b   6.646
_cell_length_c   7.025
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   204.353
_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
  Sm  Sm0  1  0.934  0.632  0.750  1.0
  Sm  Sm1  1  0.434  0.868  0.250  1.0
  Sm  Sm2  1  0.566  0.132  0.750  1.0
  Sm  Sm3  1  0.066  0.368  0.250  1.0
  F  F4  1  0.075  0.981  0.750  1.0
  F  F5  1  0.575  0.519  0.250  1.0
  F  F6  1  0.425  0.481  0.750  1.0
  F  F7  1  0.925  0.019  0.250  1.0
  F  F8  1  0.394  0.166  0.065  1.0
  F  F9  1  0.894  0.334  0.935  1.0
  F  F10  1  0.106  0.666  0.435  1.0
  F  F11  1  0.606  0.834  0.565  1.0
  F  F12  1  0.606  0.834  0.935  1.0
  F  F13  1  0.106  0.666  0.065  1.0
  F  F14  1  0.894  0.334  0.565  1.0
  F  F15  1  0.394  0.166  0.435  1.0
[/CIF]
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