data_CaTi2Si
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.12
_cell_length_b   5.12
_cell_length_c   5.12
_cell_angle_alpha   131.72
_cell_angle_beta   131.72
_cell_angle_gamma   70.67
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CaTi2Si
_chemical_formula_sum   'Ca1 Ti2 Si1'
_cell_volume   73.45
_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
  Ca  Ca0  1  0.0  0.0  0.18  1.0
  Ti  Ti2  1  0.1  0.0  0.09  1.0
  Ti  Ti3  1  0.0  0.1  0.09  1.0
  Si  Si1  1  0.0  0.0  0.0  1.0

data_CaTi2Si
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.93
_cell_length_b   5.93
_cell_length_c   5.12
_cell_angle_alpha   90.0
_cell_angle_beta   125.33
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CaTi2Si
_chemical_formula_sum   'Ca2 Ti4 Si2'
_cell_volume   146.9
_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
  Ca  Ca0  2  0.32  0.5  0.82  1.0
  Ti  Ti1  4  0.46  0.45  0.01  1.0
  Si  Si2  2  0.0  0.0  0.0  1.0

Ca Ti Ti Si
Ca Ti Ti Si 0 2 o o o 0 3 o o o 0 1 o o o 1 3 o o o 2 3 o o o 