The crystal structure described by Y2Pt2Se7 crystallizes in the cubic Fd-3m space group. Y(1) is bonded in a body-centered cubic geometry to two equivalent Se(2) and six equivalent Se(1) atoms. Pt(1) is bonded to six equivalent Se(1) atoms to form corner-sharing PtSe6 octahedra. The corner-sharing octahedral tilt angles are 53°. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to two equivalent Y(1) and two equivalent Pt(1) atoms to form SeY2Pt2 tetrahedra that share corners with two equivalent Se(2)Y4 tetrahedra, corners with twelve equivalent Se(1)Y2Pt2 tetrahedra,  an edgeedge with one Se(2)Y4 tetrahedra, and edges with four equivalent Se(1)Y2Pt2 tetrahedra. In the second Se site, Se(2) is bonded to four equivalent Y(1) atoms to form SeY4 tetrahedra that share corners with four equivalent Se(2)Y4 tetrahedra, corners with twelve equivalent Se(1)Y2Pt2 tetrahedra, and edges with six equivalent Se(1)Y2Pt2 tetrahedra. is represented by the CIF file [CIF]
data_Y2Pt2Se7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.096
_cell_length_b   9.096
_cell_length_c   9.096
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   532.092
_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
  Y  Y0  1  0.500  0.000  0.500  1.0
  Y  Y1  1  0.500  0.500  0.000  1.0
  Y  Y2  1  0.000  0.500  0.500  1.0
  Y  Y3  1  0.500  0.500  0.500  1.0
  Pt  Pt4  1  0.000  0.000  0.000  1.0
  Pt  Pt5  1  0.500  0.000  0.000  1.0
  Pt  Pt6  1  0.000  0.000  0.500  1.0
  Pt  Pt7  1  0.000  0.500  0.000  1.0
  Se  Se8  1  0.662  0.088  0.088  1.0
  Se  Se9  1  0.912  0.338  0.338  1.0
  Se  Se10  1  0.088  0.088  0.662  1.0
  Se  Se11  1  0.662  0.662  0.088  1.0
  Se  Se12  1  0.375  0.375  0.375  1.0
  Se  Se13  1  0.662  0.088  0.662  1.0
  Se  Se14  1  0.088  0.662  0.088  1.0
  Se  Se15  1  0.338  0.912  0.338  1.0
  Se  Se16  1  0.912  0.912  0.338  1.0
  Se  Se17  1  0.338  0.338  0.912  1.0
  Se  Se18  1  0.625  0.625  0.625  1.0
  Se  Se19  1  0.912  0.338  0.912  1.0
  Se  Se20  1  0.088  0.662  0.662  1.0
  Se  Se21  1  0.338  0.912  0.912  1.0
[/CIF]
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The crystal structure described by Y2Pt2Se7 crystallizes in the cubic Fd-3m space group. Y(1) is bonded in a body-centered cubic geometry to two equivalent Se(2) and six equivalent Se(1) atoms. Pt(1) is bonded to six equivalent Se(1) atoms to form corner-sharing PtSe6 octahedra. The corner-sharing octahedral tilt angles are 53°. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to two equivalent Y(1) and two equivalent Pt(1) atoms to form SeY2Pt2 tetrahedra that share corners with two equivalent Se(2)Y4 tetrahedra, corners with twelve equivalent Se(1)Y2Pt2 tetrahedra,  an edgeedge with one Se(2)Y4 tetrahedra, and edges with four equivalent Se(1)Y2Pt2 tetrahedra. In the second Se site, Se(2) is bonded to four equivalent Y(1) atoms to form SeY4 tetrahedra that share corners with four equivalent Se(2)Y4 tetrahedra, corners with twelve equivalent Se(1)Y2Pt2 tetrahedra, and edges with six equivalent Se(1)Y2Pt2 tetrahedra. is represented by the CIF file [CIF]
data_Y2Pt2Se7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.096
_cell_length_b   9.096
_cell_length_c   9.096
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   532.092
_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
  Y  Y0  1  0.500  0.000  0.500  1.0
  Y  Y1  1  0.500  0.500  0.000  1.0
  Y  Y2  1  0.000  0.500  0.500  1.0
  Y  Y3  1  0.500  0.500  0.500  1.0
  Pt  Pt4  1  0.000  0.000  0.000  1.0
  Pt  Pt5  1  0.500  0.000  0.000  1.0
  Pt  Pt6  1  0.000  0.000  0.500  1.0
  Pt  Pt7  1  0.000  0.500  0.000  1.0
  Se  Se8  1  0.662  0.088  0.088  1.0
  Se  Se9  1  0.912  0.338  0.338  1.0
  Se  Se10  1  0.088  0.088  0.662  1.0
  Se  Se11  1  0.662  0.662  0.088  1.0
  Se  Se12  1  0.375  0.375  0.375  1.0
  Se  Se13  1  0.662  0.088  0.662  1.0
  Se  Se14  1  0.088  0.662  0.088  1.0
  Se  Se15  1  0.338  0.912  0.338  1.0
  Se  Se16  1  0.912  0.912  0.338  1.0
  Se  Se17  1  0.338  0.338  0.912  1.0
  Se  Se18  1  0.625  0.625  0.625  1.0
  Se  Se19  1  0.912  0.338  0.912  1.0
  Se  Se20  1  0.088  0.662  0.662  1.0
  Se  Se21  1  0.338  0.912  0.912  1.0
[/CIF]
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