data_Ga2SiAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.84
_cell_length_b   9.84
_cell_length_c   9.84
_cell_angle_alpha   17.14
_cell_angle_beta   17.14
_cell_angle_gamma   17.14
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ga2SiAs
_chemical_formula_sum   'Ga2 Si1 As1'
_cell_volume   72.3
_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  Ga1  1  0.0  0.0  0.34  1.0
  Ga  Ga2  1  0.0  0.0  0.76  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0
  As  As0  1  0.0  0.0  0.55  1.0

data_Ga2SiAs
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.08
_cell_length_b   2.93
_cell_length_c   9.84
_cell_angle_alpha   90.0
_cell_angle_beta   99.91
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ga2SiAs
_chemical_formula_sum   'Ga4 Si2 As2'
_cell_volume   144.59
_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  0.24  1.0
  Ga  Ga1  2  0.0  0.0  0.66  1.0
  Si  Si2  2  0.0  0.0  0.0  1.0
  As  As3  2  0.0  0.0  0.45  1.0

Ga Ga Si As
Ga Ga Si As 0 3 o o o 1 3 o o o 1 2 o o + 2 2 o + - 2 2 + - o 2 2 + o - 