data_Eu(AlSi)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.59
_cell_length_b   6.59
_cell_length_c   4.56
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   146.27
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Eu(AlSi)2
_chemical_formula_sum   'Eu1 Al2 Si2'
_cell_volume   110.12
_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
  Eu  Eu2  1  0.0  0.0  0.0  1.0
  Al  Al0  1  0.91  0.67  0.28  1.0
  Al  Al1  1  0.91  0.33  0.28  1.0
  Si  Si3  1  0.91  0.47  0.0  1.0
  Si  Si4  1  0.91  0.53  0.0  1.0

data_Eu(AlSi)2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.83
_cell_length_b   4.56
_cell_length_c   6.59
_cell_angle_alpha   90.0
_cell_angle_beta   106.87
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Eu(AlSi)2
_chemical_formula_sum   'Eu1 Al2 Si2'
_cell_volume   110.12
_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
  Eu  Eu0  1  0.0  0.0  0.0  1.0
  Al  Al1  1  0.33  0.72  0.42  1.0
  Al  Al2  1  0.67  0.72  0.75  1.0
  Si  Si3  1  0.47  -0.0  0.56  1.0
  Si  Si4  1  0.53  -0.0  0.61  1.0

Eu Al Al Si Si
Eu Al Al Si Si 0 1 - - o 1 4 o o o 1 3 o o o 2 4 o o o 2 3 o o o 3 4 o o o 