The structure described by Dy3CuSnSe7 crystallizes in the hexagonal P6_3 space group. Dy(1) is bonded in a 6-coordinate geometry to one Se(3), three equivalent Se(1), and three equivalent Se(2) atoms. Cu(1) is bonded in a trigonal planar geometry to 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 4-coordinate geometry to three equivalent Dy(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 Dy(1) and one Sn(1) atom. In the third Se site, Se(3) is bonded in a tetrahedral geometry to three equivalent Dy(1) and one Sn(1) atom. is represented by the CIF card [CIF]
data_Dy3CuSnSe7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.225
_cell_length_b   10.225
_cell_length_c   6.519
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   590.321
_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
  Dy  Dy0  1  0.358  0.154  0.393  1.0
  Dy  Dy1  1  0.203  0.358  0.893  1.0
  Dy  Dy2  1  0.154  0.797  0.893  1.0
  Dy  Dy3  1  0.846  0.203  0.393  1.0
  Dy  Dy4  1  0.797  0.642  0.393  1.0
  Dy  Dy5  1  0.642  0.846  0.893  1.0
  Cu  Cu6  1  0.000  0.000  0.999  1.0
  Cu  Cu7  1  0.000  0.000  0.499  1.0
  Sn  Sn8  1  0.333  0.667  0.322  1.0
  Sn  Sn9  1  0.667  0.333  0.822  1.0
  Se  Se10  1  0.265  0.119  0.969  1.0
  Se  Se11  1  0.146  0.265  0.469  1.0
  Se  Se12  1  0.119  0.854  0.469  1.0
  Se  Se13  1  0.881  0.146  0.969  1.0
  Se  Se14  1  0.854  0.735  0.969  1.0
  Se  Se15  1  0.735  0.881  0.469  1.0
  Se  Se16  1  0.520  0.442  0.639  1.0
  Se  Se17  1  0.078  0.520  0.139  1.0
  Se  Se18  1  0.442  0.922  0.139  1.0
  Se  Se19  1  0.558  0.078  0.639  1.0
  Se  Se20  1  0.922  0.480  0.639  1.0
  Se  Se21  1  0.480  0.558  0.139  1.0
  Se  Se22  1  0.333  0.667  0.714  1.0
  Se  Se23  1  0.667  0.333  0.214  1.0
[/CIF]
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The structure described by Dy3CuSnSe7 crystallizes in the hexagonal P6_3 space group. Dy(1) is bonded in a 6-coordinate geometry to one Se(3), three equivalent Se(1), and three equivalent Se(2) atoms. Cu(1) is bonded in a trigonal planar geometry to 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 4-coordinate geometry to three equivalent Dy(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 Dy(1) and one Sn(1) atom. In the third Se site, Se(3) is bonded in a tetrahedral geometry to three equivalent Dy(1) and one Sn(1) atom. is represented by the CIF card [CIF]
data_Dy3CuSnSe7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.225
_cell_length_b   10.225
_cell_length_c   6.519
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   590.321
_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
  Dy  Dy0  1  0.358  0.154  0.393  1.0
  Dy  Dy1  1  0.203  0.358  0.893  1.0
  Dy  Dy2  1  0.154  0.797  0.893  1.0
  Dy  Dy3  1  0.846  0.203  0.393  1.0
  Dy  Dy4  1  0.797  0.642  0.393  1.0
  Dy  Dy5  1  0.642  0.846  0.893  1.0
  Cu  Cu6  1  0.000  0.000  0.999  1.0
  Cu  Cu7  1  0.000  0.000  0.499  1.0
  Sn  Sn8  1  0.333  0.667  0.322  1.0
  Sn  Sn9  1  0.667  0.333  0.822  1.0
  Se  Se10  1  0.265  0.119  0.969  1.0
  Se  Se11  1  0.146  0.265  0.469  1.0
  Se  Se12  1  0.119  0.854  0.469  1.0
  Se  Se13  1  0.881  0.146  0.969  1.0
  Se  Se14  1  0.854  0.735  0.969  1.0
  Se  Se15  1  0.735  0.881  0.469  1.0
  Se  Se16  1  0.520  0.442  0.639  1.0
  Se  Se17  1  0.078  0.520  0.139  1.0
  Se  Se18  1  0.442  0.922  0.139  1.0
  Se  Se19  1  0.558  0.078  0.639  1.0
  Se  Se20  1  0.922  0.480  0.639  1.0
  Se  Se21  1  0.480  0.558  0.139  1.0
  Se  Se22  1  0.333  0.667  0.714  1.0
  Se  Se23  1  0.667  0.333  0.214  1.0
[/CIF]
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