data_YCo2Bi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.49
_cell_length_b   4.49
_cell_length_c   5.21
_cell_angle_alpha   116.22
_cell_angle_beta   116.22
_cell_angle_gamma   58.93
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YCo2Bi
_chemical_formula_sum   'Y1 Co2 Bi1'
_cell_volume   77.55
_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
  Y  Y3  1  0.0  0.0  0.0  1.0
  Co  Co1  1  0.16  0.0  0.75  1.0
  Co  Co2  1  0.02  0.0  0.74  1.0
  Bi  Bi0  1  0.59  0.0  0.25  1.0

data_YCo2Bi
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.42
_cell_length_b   4.49
_cell_length_c   5.16
_cell_angle_alpha   64.91
_cell_angle_beta   64.66
_cell_angle_gamma   60.54
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YCo2Bi
_chemical_formula_sum   'Y1 Co2 Bi1'
_cell_volume   77.55
_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
  Y  Y0  1  0.0  0.0  0.0  1.0
  Co  Co1  1  0.0  0.28  0.74  1.0
  Co  Co2  1  0.0  0.41  0.75  1.0
  Bi  Bi3  1  0.0  0.34  0.25  1.0

Y Co Co Bi
Y Co Co Bi 0 2 o o - 0 3 o o o 0 3 - o o 1 2 o o o 1 3 o o + 1 3 - o o 2 3 o o + 2 3 - o o 
Co2YBi crystallizes in the triclinic P1 space group. Y(1) is bonded in a distorted single-bond geometry to one Co(2) and three equivalent Bi(1) atoms. The Y(1)-Co(2) bond length is 1.39 Å. There are a spread of Y(1)-Bi(1) bond distances ranging from 2.37-3.70 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted single-bond geometry to one Co(2) and one Bi(1) atom. The Co(1)-Co(2) bond length is 0.60 Å. The Co(1)-Bi(1) bond length is 2.45 Å. In the second Co site, Co(2) is bonded in a distorted bent 120 degrees geometry to one Y(1), one Co(1), and one Bi(1) atom. The Co(2)-Bi(1) bond length is 2.45 Å. Bi(1) is bonded in a 5-coordinate geometry to three equivalent Y(1), one Co(1), and one Co(2) atom.