data_CoAs2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.04
_cell_length_b   3.04
_cell_length_c   8.51
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   91.19
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CoAs2Pb
_chemical_formula_sum   'Co1 As2 Pb1'
_cell_volume   78.61
_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
  Co  Co2  1  0.0  0.0  0.0  1.0
  As  As0  1  0.13  0.0  0.11  1.0
  As  As1  1  0.13  0.0  0.39  1.0
  Pb  Pb3  1  0.0  0.0  0.25  1.0

data_CoAs2Pb
_symmetry_space_group_name_H-M   Pm
_cell_length_a   3.04
_cell_length_b   3.04
_cell_length_c   8.51
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   CoAs2Pb
_chemical_formula_sum   'Co1 As2 Pb1'
_cell_volume   78.63
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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
  Co  Co0  1  0.0  0.0  0.0  1.0
  As  As1  1  0.13  0.0  0.11  1.0
  As  As2  1  0.13  0.0  0.39  1.0
  Pb  Pb3  1  0.0  0.0  0.25  1.0

Co As As Pb
Co As As Pb 0 1 o o o 1 3 o o o 2 3 o o o 
CoPbAs2 crystallizes in the monoclinic Pm space group. The structure is zero-dimensional and consists of one CoPbAs2 cluster. Co(1) is bonded in a single-bond geometry to one As(1) atom. The Co(1)-As(1) bond length is 1.04 Å. Pb(1) is bonded in a bent 150 degrees geometry to one As(1) and one As(2) atom. The Pb(1)-As(1) bond length is 1.25 Å. The Pb(1)-As(2) bond length is 1.25 Å. There are two inequivalent As sites. In the first As site, As(1) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one Pb(1) atom. In the second As site, As(2) is bonded in a single-bond geometry to one Pb(1) atom.