The material structure described by Cu2Se is Fluorite structured and crystallizes in the orthorhombic Imm2 space group. Cu(1) is bonded in a distorted trigonal planar geometry to three equivalent Se(1) atoms. Se(1) is bonded in a 6-coordinate geometry to six equivalent Cu(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cu2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.285
_cell_length_b   4.285
_cell_length_c   4.285
_cell_angle_alpha   124.489
_cell_angle_beta   123.645
_cell_angle_gamma   83.091
_symmetry_Int_Tables_number   1
_cell_volume   51.803
_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
  Cu  Cu0  1  0.319  0.708  0.611  1.0
  Cu  Cu1  1  0.902  0.292  0.611  1.0
  Se  Se2  1  0.975  0.000  0.975  1.0
[/CIF]
.
The material structure described by Cu2Se is Fluorite structured and crystallizes in the orthorhombic Imm2 space group. Cu(1) is bonded in a distorted trigonal planar geometry to three equivalent Se(1) atoms. Se(1) is bonded in a 6-coordinate geometry to six equivalent Cu(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cu2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.285
_cell_length_b   4.285
_cell_length_c   4.285
_cell_angle_alpha   124.489
_cell_angle_beta   123.645
_cell_angle_gamma   83.091
_symmetry_Int_Tables_number   1
_cell_volume   51.803
_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
  Cu  Cu0  1  0.319  0.708  0.611  1.0
  Cu  Cu1  1  0.902  0.292  0.611  1.0
  Se  Se2  1  0.975  0.000  0.975  1.0
[/CIF]
.