data_GaCu2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.31
_cell_length_b   4.31
_cell_length_c   3.86
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GaCu2Pb
_chemical_formula_sum   'Ga1 Cu2 Pb1'
_cell_volume   71.52
_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
  Ga  Ga2  1  0.0  0.0  0.0  1.0
  Cu  Cu0  1  0.15  0.0  0.93  1.0
  Cu  Cu1  1  0.0  0.15  0.93  1.0
  Pb  Pb3  1  0.15  0.15  0.0  1.0

data_GaCu2Pb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.09
_cell_length_b   6.09
_cell_length_c   3.86
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   GaCu2Pb
_chemical_formula_sum   'Ga2 Cu4 Pb2'
_cell_volume   143.05
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Ga  Ga0  2  0.0  0.0  0.0  1.0
  Cu  Cu1  4  0.08  0.08  0.93  1.0
  Pb  Pb2  2  0.15  0.0  0.0  1.0

Ga Cu Cu Pb
Ga Cu Cu Pb 0 1 o o - 0 2 o o - 1 3 o o + 2 3 o o + 
Cu2GaPb is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Cu2GaPb clusters. Cu(1) is bonded in a distorted L-shaped geometry to one Ga(1) and one Pb(1) atom. The Cu(1)-Ga(1) bond length is 0.72 Å. The Cu(1)-Pb(1) bond length is 0.72 Å. Ga(1) is bonded in a 3-coordinate geometry to two equivalent Cu(1) and one Pb(1) atom. The Ga(1)-Pb(1) bond length is 0.93 Å. Pb(1) is bonded in a distorted L-shaped geometry to two equivalent Cu(1) and one Ga(1) atom.