The structure described by Yb(LuSe2)2 crystallizes in the monoclinic P2/m space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded to two equivalent Se(2) and four equivalent Se(1) atoms to form LuSe6 octahedra that share corners with six equivalent Yb(1)Se6 octahedra, edges with two equivalent Lu(1)Se6 octahedra, edges with two equivalent Yb(1)Se6 octahedra, and edges with four equivalent Lu(2)Se6 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. In the second Lu site, Lu(2) is bonded to two equivalent Se(1) and four equivalent Se(2) atoms to form LuSe6 octahedra that share edges with two equivalent Lu(2)Se6 octahedra, edges with four equivalent Lu(1)Se6 octahedra, and edges with four equivalent Yb(1)Se6 octahedra. Yb(1) is bonded to two equivalent Se(2) and four equivalent Se(1) atoms to form YbSe6 octahedra that share corners with six equivalent Lu(1)Se6 octahedra, edges with two equivalent Lu(1)Se6 octahedra, edges with two equivalent Yb(1)Se6 octahedra, and edges with four equivalent Lu(2)Se6 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to one Lu(2), two equivalent Lu(1), and two equivalent Yb(1) atoms to form a mixture of corner and edge-sharing SeYb2Lu3 square pyramids. In the second Se site, Se(2) is bonded in a rectangular see-saw-like geometry to one Lu(1), two equivalent Lu(2), and one Yb(1) atom. is represented by the CIF card [CIF]
data_Yb(LuSe2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.031
_cell_length_b   6.871
_cell_length_c   7.063
_cell_angle_alpha   72.010
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   186.073
_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
  Yb  Yb0  1  0.000  0.500  0.500  1.0
  Lu  Lu1  1  0.000  0.000  0.000  1.0
  Lu  Lu2  1  0.500  0.500  0.000  1.0
  Se  Se3  1  0.500  0.759  0.241  1.0
  Se  Se4  1  0.000  0.258  0.231  1.0
  Se  Se5  1  0.500  0.241  0.759  1.0
  Se  Se6  1  0.000  0.742  0.769  1.0
[/CIF]
.
The structure described by Yb(LuSe2)2 crystallizes in the monoclinic P2/m space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded to two equivalent Se(2) and four equivalent Se(1) atoms to form LuSe6 octahedra that share corners with six equivalent Yb(1)Se6 octahedra, edges with two equivalent Lu(1)Se6 octahedra, edges with two equivalent Yb(1)Se6 octahedra, and edges with four equivalent Lu(2)Se6 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. In the second Lu site, Lu(2) is bonded to two equivalent Se(1) and four equivalent Se(2) atoms to form LuSe6 octahedra that share edges with two equivalent Lu(2)Se6 octahedra, edges with four equivalent Lu(1)Se6 octahedra, and edges with four equivalent Yb(1)Se6 octahedra. Yb(1) is bonded to two equivalent Se(2) and four equivalent Se(1) atoms to form YbSe6 octahedra that share corners with six equivalent Lu(1)Se6 octahedra, edges with two equivalent Lu(1)Se6 octahedra, edges with two equivalent Yb(1)Se6 octahedra, and edges with four equivalent Lu(2)Se6 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to one Lu(2), two equivalent Lu(1), and two equivalent Yb(1) atoms to form a mixture of corner and edge-sharing SeYb2Lu3 square pyramids. In the second Se site, Se(2) is bonded in a rectangular see-saw-like geometry to one Lu(1), two equivalent Lu(2), and one Yb(1) atom. is represented by the CIF card [CIF]
data_Yb(LuSe2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.031
_cell_length_b   6.871
_cell_length_c   7.063
_cell_angle_alpha   72.010
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   186.073
_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
  Yb  Yb0  1  0.000  0.500  0.500  1.0
  Lu  Lu1  1  0.000  0.000  0.000  1.0
  Lu  Lu2  1  0.500  0.500  0.000  1.0
  Se  Se3  1  0.500  0.759  0.241  1.0
  Se  Se4  1  0.000  0.258  0.231  1.0
  Se  Se5  1  0.500  0.241  0.759  1.0
  Se  Se6  1  0.000  0.742  0.769  1.0
[/CIF]
.