The material structure described by CuAs2 is Khatyrkite structured and crystallizes in the tetragonal I4/mcm space group. Cu(1) is bonded in a 10-coordinate geometry to two equivalent Cu(1) and eight equivalent As(1) atoms. As(1) is bonded in a 5-coordinate geometry to four equivalent Cu(1) and one As(1) atom. is represented by the CIF file [CIF]
data_CuAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.294
_cell_length_b   5.106
_cell_length_c   5.106
_cell_angle_alpha   74.408
_cell_angle_beta   58.772
_cell_angle_gamma   58.772
_symmetry_Int_Tables_number   1
_cell_volume   100.917
_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
  Cu  Cu0  1  0.250  0.000  0.000  1.0
  Cu  Cu1  1  0.750  0.000  0.000  1.0
  As  As2  1  0.148  0.500  0.204  1.0
  As  As3  1  0.352  0.796  0.500  1.0
  As  As4  1  0.648  0.204  0.500  1.0
  As  As5  1  0.852  0.500  0.796  1.0
[/CIF]
.
The material structure described by CuAs2 is Khatyrkite structured and crystallizes in the tetragonal I4/mcm space group. Cu(1) is bonded in a 10-coordinate geometry to two equivalent Cu(1) and eight equivalent As(1) atoms. As(1) is bonded in a 5-coordinate geometry to four equivalent Cu(1) and one As(1) atom. is represented by the CIF file [CIF]
data_CuAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.294
_cell_length_b   5.106
_cell_length_c   5.106
_cell_angle_alpha   74.408
_cell_angle_beta   58.772
_cell_angle_gamma   58.772
_symmetry_Int_Tables_number   1
_cell_volume   100.917
_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
  Cu  Cu0  1  0.250  0.000  0.000  1.0
  Cu  Cu1  1  0.750  0.000  0.000  1.0
  As  As2  1  0.148  0.500  0.204  1.0
  As  As3  1  0.352  0.796  0.500  1.0
  As  As4  1  0.648  0.204  0.500  1.0
  As  As5  1  0.852  0.500  0.796  1.0
[/CIF]
.