The structure described by CuP2 crystallizes in the monoclinic P2_1/c space group. Cu(1) is bonded in a 5-coordinate geometry to one Cu(1), one P(1), and three equivalent P(2) atoms. There are two inequivalent P sites. In the first P site, P(2) is bonded to three equivalent Cu(1) and two equivalent P(1) atoms to form distorted PCu3P2 trigonal bipyramids that share corners with five equivalent P(1)CuP3 tetrahedra, corners with six equivalent P(2)Cu3P2 trigonal bipyramids, and  an edgeedge with one P(2)Cu3P2 trigonal bipyramid. In the second P site, P(1) is bonded to one Cu(1), one P(1), and two equivalent P(2) atoms to form distorted PCuP3 tetrahedra that share corners with two equivalent P(1)CuP3 tetrahedra and corners with five equivalent P(2)Cu3P2 trigonal bipyramids. is represented by the CIF file [CIF]
data_CuP2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.783
_cell_length_b   5.767
_cell_length_c   7.498
_cell_angle_alpha   112.600
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   190.937
_cell_formula_units_Z   4
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  0.040  0.774  0.918  1.0
  Cu  Cu1  1  0.540  0.726  0.582  1.0
  Cu  Cu2  1  0.960  0.226  0.082  1.0
  Cu  Cu3  1  0.460  0.274  0.418  1.0
  P  P4  1  0.384  0.673  0.080  1.0
  P  P5  1  0.884  0.827  0.420  1.0
  P  P6  1  0.616  0.327  0.920  1.0
  P  P7  1  0.116  0.173  0.580  1.0
  P  P8  1  0.780  0.454  0.700  1.0
  P  P9  1  0.280  0.046  0.800  1.0
  P  P10  1  0.220  0.546  0.300  1.0
  P  P11  1  0.720  0.954  0.200  1.0
[/CIF]
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The structure described by CuP2 crystallizes in the monoclinic P2_1/c space group. Cu(1) is bonded in a 5-coordinate geometry to one Cu(1), one P(1), and three equivalent P(2) atoms. There are two inequivalent P sites. In the first P site, P(2) is bonded to three equivalent Cu(1) and two equivalent P(1) atoms to form distorted PCu3P2 trigonal bipyramids that share corners with five equivalent P(1)CuP3 tetrahedra, corners with six equivalent P(2)Cu3P2 trigonal bipyramids, and  an edgeedge with one P(2)Cu3P2 trigonal bipyramid. In the second P site, P(1) is bonded to one Cu(1), one P(1), and two equivalent P(2) atoms to form distorted PCuP3 tetrahedra that share corners with two equivalent P(1)CuP3 tetrahedra and corners with five equivalent P(2)Cu3P2 trigonal bipyramids. is represented by the CIF file [CIF]
data_CuP2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.783
_cell_length_b   5.767
_cell_length_c   7.498
_cell_angle_alpha   112.600
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   190.937
_cell_formula_units_Z   4
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  0.040  0.774  0.918  1.0
  Cu  Cu1  1  0.540  0.726  0.582  1.0
  Cu  Cu2  1  0.960  0.226  0.082  1.0
  Cu  Cu3  1  0.460  0.274  0.418  1.0
  P  P4  1  0.384  0.673  0.080  1.0
  P  P5  1  0.884  0.827  0.420  1.0
  P  P6  1  0.616  0.327  0.920  1.0
  P  P7  1  0.116  0.173  0.580  1.0
  P  P8  1  0.780  0.454  0.700  1.0
  P  P9  1  0.280  0.046  0.800  1.0
  P  P10  1  0.220  0.546  0.300  1.0
  P  P11  1  0.720  0.954  0.200  1.0
[/CIF]
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