The crystal structure described by Sm3Ag4Sn4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 12-coordinate geometry to six equivalent Ag(1), two equivalent Sn(1), and four equivalent Sn(2) atoms. In the second Sm site, Sm(2) is bonded to two equivalent Sn(1) and four equivalent Sn(2) atoms to form distorted edge-sharing SmSn6 octahedra. Ag(1) is bonded in a 8-coordinate geometry to three equivalent Sm(1), one Ag(1), one Sn(2), and three equivalent Sn(1) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to one Sm(2), two equivalent Sm(1), and six equivalent Ag(1) atoms. In the second Sn site, Sn(2) is bonded in a 9-coordinate geometry to two equivalent Sm(2), four equivalent Sm(1), two equivalent Ag(1), and one Sn(2) atom. is represented by the CIF card [CIF]
data_Sm3(AgSn)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.849
_cell_length_b   8.849
_cell_length_c   8.849
_cell_angle_alpha   149.730
_cell_angle_beta   130.772
_cell_angle_gamma   58.888
_symmetry_Int_Tables_number   1
_cell_volume   262.448
_cell_formula_units_Z   1
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  0.371  0.871  0.500  1.0
  Sm  Sm1  1  0.629  0.129  0.500  1.0
  Sm  Sm2  1  0.000  0.000  0.000  1.0
  Ag  Ag3  1  0.634  0.329  0.305  1.0
  Ag  Ag4  1  0.366  0.671  0.695  1.0
  Ag  Ag5  1  0.025  0.329  0.695  1.0
  Ag  Ag6  1  0.975  0.671  0.305  1.0
  Sn  Sn7  1  0.216  0.216  0.000  1.0
  Sn  Sn8  1  0.784  0.784  0.000  1.0
  Sn  Sn9  1  0.695  0.500  0.195  1.0
  Sn  Sn10  1  0.305  0.500  0.805  1.0
[/CIF]
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The crystal structure described by Sm3Ag4Sn4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 12-coordinate geometry to six equivalent Ag(1), two equivalent Sn(1), and four equivalent Sn(2) atoms. In the second Sm site, Sm(2) is bonded to two equivalent Sn(1) and four equivalent Sn(2) atoms to form distorted edge-sharing SmSn6 octahedra. Ag(1) is bonded in a 8-coordinate geometry to three equivalent Sm(1), one Ag(1), one Sn(2), and three equivalent Sn(1) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to one Sm(2), two equivalent Sm(1), and six equivalent Ag(1) atoms. In the second Sn site, Sn(2) is bonded in a 9-coordinate geometry to two equivalent Sm(2), four equivalent Sm(1), two equivalent Ag(1), and one Sn(2) atom. is represented by the CIF card [CIF]
data_Sm3(AgSn)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.849
_cell_length_b   8.849
_cell_length_c   8.849
_cell_angle_alpha   149.730
_cell_angle_beta   130.772
_cell_angle_gamma   58.888
_symmetry_Int_Tables_number   1
_cell_volume   262.448
_cell_formula_units_Z   1
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  0.371  0.871  0.500  1.0
  Sm  Sm1  1  0.629  0.129  0.500  1.0
  Sm  Sm2  1  0.000  0.000  0.000  1.0
  Ag  Ag3  1  0.634  0.329  0.305  1.0
  Ag  Ag4  1  0.366  0.671  0.695  1.0
  Ag  Ag5  1  0.025  0.329  0.695  1.0
  Ag  Ag6  1  0.975  0.671  0.305  1.0
  Sn  Sn7  1  0.216  0.216  0.000  1.0
  Sn  Sn8  1  0.784  0.784  0.000  1.0
  Sn  Sn9  1  0.695  0.500  0.195  1.0
  Sn  Sn10  1  0.305  0.500  0.805  1.0
[/CIF]
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