data_YCuP
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.94
_cell_length_b   3.94
_cell_length_c   7.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YCuP
_chemical_formula_sum   'Y2 Cu2 P2'
_cell_volume   106.63
_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  Y4  1  0.0  0.0  0.0  1.0
  Y  Y5  1  0.0  0.0  0.97  1.0
  Cu  Cu0  1  0.0  0.27  0.96  1.0
  Cu  Cu1  1  0.97  0.14  0.99  1.0
  P  P2  1  0.0  0.27  0.99  1.0
  P  P3  1  0.97  0.14  0.96  1.0

data_YCuP
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.94
_cell_length_b   3.94
_cell_length_c   7.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YCuP
_chemical_formula_sum   'Y2 Cu2 P2'
_cell_volume   106.63
_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  0.0  0.0  0.0  1.0
  Y  Y1  1  0.0  0.0  0.97  1.0
  Cu  Cu2  1  0.0  0.27  0.96  1.0
  Cu  Cu3  1  0.97  0.14  0.99  1.0
  P  P4  1  0.0  0.27  0.99  1.0
  P  P5  1  0.97  0.14  0.96  1.0

Y Y Cu Cu P P
Y2CuPCuP crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one copper--phosphane (1/1) molecule and one Y2CuP cluster. In the Y2CuP cluster, there are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a distorted single-bond geometry to one Y(2) atom. The Y(1)-Y(2) bond length is 0.22 Å. In the second Y site, Y(2) is bonded in a 2-coordinate geometry to one Y(1) and one Cu(2) atom. The Y(2)-Cu(2) bond length is 0.62 Å. Cu(2) is bonded in a single-bond geometry to one Y(2) and one P(2) atom. The Cu(2)-P(2) bond length is 0.22 Å. P(2) is bonded in a single-bond geometry to one Cu(2) atom.