data_Y2As
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.14
_cell_length_b   6.14
_cell_length_c   7.53
_cell_angle_alpha   110.17
_cell_angle_beta   110.17
_cell_angle_gamma   35.65
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Y2As
_chemical_formula_sum   'Y4 As2'
_cell_volume   154.1
_cell_formula_units_Z   2
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  Y2  1  0.5  0.0  0.78  1.0
  Y  Y3  1  0.2  0.0  0.13  1.0
  Y  Y4  1  0.76  0.0  0.88  1.0
  Y  Y5  1  0.45  0.0  0.24  1.0
  As  As0  1  0.59  0.0  0.94  1.0
  As  As1  1  0.37  0.0  0.08  1.0

data_Y2As
_symmetry_space_group_name_H-M   P-1
_cell_length_a   3.76
_cell_length_b   6.14
_cell_length_c   7.53
_cell_angle_alpha   110.17
_cell_angle_beta   90.0
_cell_angle_gamma   107.83
_symmetry_Int_Tables_number   2
_chemical_formula_structural   Y2As
_chemical_formula_sum   'Y4 As2'
_cell_volume   154.1
_cell_formula_units_Z   2
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
  Y  Y0  2  0.0  0.22  0.63  1.0
  Y  Y1  2  0.0  0.48  0.73  1.0
  As  As2  2  0.0  0.39  0.57  1.0

Y Y Y Y As As