data_Rb2Ti
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.78
_cell_length_b   9.78
_cell_length_c   4.15
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Rb2Ti
_chemical_formula_sum   'Rb4 Ti2'
_cell_volume   397.33
_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
  Rb  Rb0  1  0.47  0.47  0.0  1.0
  Rb  Rb1  1  0.31  0.31  0.0  1.0
  Rb  Rb2  1  0.36  0.42  0.08  1.0
  Rb  Rb3  1  0.42  0.36  0.08  1.0
  Ti  Ti4  1  0.0  0.0  0.0  1.0
  Ti  Ti5  1  0.89  0.89  0.08  1.0

data_Rb2Ti
_symmetry_space_group_name_H-M   Cm
_cell_length_a   13.84
_cell_length_b   13.84
_cell_length_c   4.15
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Rb2Ti
_chemical_formula_sum   'Rb8 Ti4'
_cell_volume   794.67
_cell_formula_units_Z   4
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
  Rb  Rb0  4  0.39  0.03  0.08  1.0
  Rb  Rb1  2  0.31  0.0  0.0  1.0
  Rb  Rb2  2  0.47  0.0  0.0  1.0
  Ti  Ti3  2  0.0  0.0  0.0  1.0
  Ti  Ti4  2  0.39  0.5  0.08  1.0

Rb Rb Rb Rb Ti Ti