data_GaCuB
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.81
_cell_length_b   3.81
_cell_length_c   3.81
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GaCuB
_chemical_formula_sum   'Ga1 Cu1 B1'
_cell_volume   39.26
_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  0.35  0.35  0.35  1.0
  Cu  Cu1  1  0.7  0.7  0.7  1.0
  B  B0  1  0.0  0.0  0.0  1.0

data_GaCuB
_symmetry_space_group_name_H-M   R3m
_cell_length_a   3.81
_cell_length_b   3.81
_cell_length_c   9.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   GaCuB
_chemical_formula_sum   'Ga3 Cu3 B3'
_cell_volume   117.77
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  3  0.0  0.0  0.65  1.0
  Cu  Cu1  3  0.0  0.0  0.3  1.0
  B  B2  3  0.0  0.0  0.0  1.0

Ga Cu B
Ga Cu B 0 2 o o + 0 2 o + o 0 2 + o o 0 1 - o o 0 1 o - o 0 1 o o - 1 2 o + + 1 2 + o + 1 2 + + o 
CuGaB crystallizes in the trigonal R3m space group. Cu(1) is bonded in a 7-coordinate geometry to three equivalent Ga(1) and four equivalent B(1) atoms. All Cu(1)-Ga(1) bond lengths are 2.21 Å. There are three shorter (2.22 Å) and one longer (2.83 Å) Cu(1)-B(1) bond length. Ga(1) is bonded in a hexagonal planar geometry to three equivalent Cu(1) and three equivalent B(1) atoms. All Ga(1)-B(1) bond lengths are 2.21 Å. B(1) is bonded to four equivalent Cu(1) and three equivalent Ga(1) atoms to form a mixture of distorted corner and edge-sharing BGa3Cu4 hexagonal pyramids.