data_YMg2Ga
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.74
_cell_length_b   5.74
_cell_length_c   5.74
_cell_angle_alpha   134.88
_cell_angle_beta   134.88
_cell_angle_gamma   65.72
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YMg2Ga
_chemical_formula_sum   'Y1 Mg2 Ga1'
_cell_volume   93.45
_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  0.82  1.0
  Mg  Mg1  1  0.2  0.0  0.41  1.0
  Mg  Mg2  1  0.0  0.2  0.41  1.0
  Ga  Ga0  1  0.0  0.0  0.0  1.0

data_YMg2Ga
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.23
_cell_length_b   6.23
_cell_length_c   5.74
_cell_angle_alpha   90.0
_cell_angle_beta   122.86
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   YMg2Ga
_chemical_formula_sum   'Y2 Mg4 Ga2'
_cell_volume   186.9
_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
  Y  Y0  2  0.18  0.0  0.18  1.0
  Mg  Mg1  4  0.19  0.4  0.79  1.0
  Ga  Ga2  2  0.0  0.0  0.0  1.0

Y Mg Mg Ga
Y Mg Mg Ga 0 3 o o + 1 2 o o o 