The structure described by Sm3CuSnSe7 crystallizes in the hexagonal P6_3 space group. Sm(1) is bonded in a 9-coordinate geometry to one Cu(1), one Se(3), three equivalent Se(2), and four equivalent Se(1) atoms. Cu(1) is bonded in a trigonal planar geometry to three equivalent Sm(1) and three equivalent Se(1) atoms. Sn(1) is bonded in a tetrahedral geometry to one Se(3) and three equivalent Se(2) atoms. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a 5-coordinate geometry to four equivalent Sm(1) and one Cu(1) atom. In the second Se site, Se(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Sm(1) and one Sn(1) atom. In the third Se site, Se(3) is bonded in a tetrahedral geometry to three equivalent Sm(1) and one Sn(1) atom. is represented by the CIF card [CIF]
data_Sm3CuSnSe7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.494
_cell_length_b   10.494
_cell_length_c   6.379
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   608.405
_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
  Sm  Sm0  1  0.214  0.356  0.941  1.0
  Sm  Sm1  1  0.142  0.786  0.941  1.0
  Sm  Sm2  1  0.644  0.858  0.941  1.0
  Sm  Sm3  1  0.786  0.644  0.441  1.0
  Sm  Sm4  1  0.356  0.142  0.441  1.0
  Sm  Sm5  1  0.858  0.214  0.441  1.0
  Cu  Cu6  1  0.000  0.000  0.001  1.0
  Cu  Cu7  1  0.000  0.000  0.501  1.0
  Sn  Sn8  1  0.333  0.667  0.367  1.0
  Sn  Sn9  1  0.667  0.333  0.867  1.0
  Se  Se10  1  0.740  0.893  0.487  1.0
  Se  Se11  1  0.433  0.919  0.190  1.0
  Se  Se12  1  0.919  0.485  0.690  1.0
  Se  Se13  1  0.515  0.433  0.690  1.0
  Se  Se14  1  0.893  0.154  0.987  1.0
  Se  Se15  1  0.567  0.081  0.690  1.0
  Se  Se16  1  0.107  0.846  0.487  1.0
  Se  Se17  1  0.333  0.667  0.764  1.0
  Se  Se18  1  0.260  0.107  0.987  1.0
  Se  Se19  1  0.485  0.567  0.190  1.0
  Se  Se20  1  0.081  0.515  0.190  1.0
  Se  Se21  1  0.667  0.333  0.264  1.0
  Se  Se22  1  0.154  0.260  0.487  1.0
  Se  Se23  1  0.846  0.740  0.987  1.0
[/CIF]
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The structure described by Sm3CuSnSe7 crystallizes in the hexagonal P6_3 space group. Sm(1) is bonded in a 9-coordinate geometry to one Cu(1), one Se(3), three equivalent Se(2), and four equivalent Se(1) atoms. Cu(1) is bonded in a trigonal planar geometry to three equivalent Sm(1) and three equivalent Se(1) atoms. Sn(1) is bonded in a tetrahedral geometry to one Se(3) and three equivalent Se(2) atoms. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a 5-coordinate geometry to four equivalent Sm(1) and one Cu(1) atom. In the second Se site, Se(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Sm(1) and one Sn(1) atom. In the third Se site, Se(3) is bonded in a tetrahedral geometry to three equivalent Sm(1) and one Sn(1) atom. is represented by the CIF card [CIF]
data_Sm3CuSnSe7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.494
_cell_length_b   10.494
_cell_length_c   6.379
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   608.405
_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
  Sm  Sm0  1  0.214  0.356  0.941  1.0
  Sm  Sm1  1  0.142  0.786  0.941  1.0
  Sm  Sm2  1  0.644  0.858  0.941  1.0
  Sm  Sm3  1  0.786  0.644  0.441  1.0
  Sm  Sm4  1  0.356  0.142  0.441  1.0
  Sm  Sm5  1  0.858  0.214  0.441  1.0
  Cu  Cu6  1  0.000  0.000  0.001  1.0
  Cu  Cu7  1  0.000  0.000  0.501  1.0
  Sn  Sn8  1  0.333  0.667  0.367  1.0
  Sn  Sn9  1  0.667  0.333  0.867  1.0
  Se  Se10  1  0.740  0.893  0.487  1.0
  Se  Se11  1  0.433  0.919  0.190  1.0
  Se  Se12  1  0.919  0.485  0.690  1.0
  Se  Se13  1  0.515  0.433  0.690  1.0
  Se  Se14  1  0.893  0.154  0.987  1.0
  Se  Se15  1  0.567  0.081  0.690  1.0
  Se  Se16  1  0.107  0.846  0.487  1.0
  Se  Se17  1  0.333  0.667  0.764  1.0
  Se  Se18  1  0.260  0.107  0.987  1.0
  Se  Se19  1  0.485  0.567  0.190  1.0
  Se  Se20  1  0.081  0.515  0.190  1.0
  Se  Se21  1  0.667  0.333  0.264  1.0
  Se  Se22  1  0.154  0.260  0.487  1.0
  Se  Se23  1  0.846  0.740  0.987  1.0
[/CIF]
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