data_Na2CoSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.59
_cell_length_b   5.59
_cell_length_c   5.59
_cell_angle_alpha   142.34
_cell_angle_beta   142.34
_cell_angle_gamma   54.32
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2CoSi
_chemical_formula_sum   'Na2 Co1 Si1'
_cell_volume   64.93
_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
  Na  Na1  1  0.0  0.81  0.49  1.0
  Na  Na2  1  0.81  0.0  0.49  1.0
  Co  Co0  1  0.0  0.0  0.98  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0

data_Na2CoSi
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.11
_cell_length_b   5.11
_cell_length_c   5.59
_cell_angle_alpha   90.0
_cell_angle_beta   117.16
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Na2CoSi
_chemical_formula_sum   'Na4 Co2 Si2'
_cell_volume   129.87
_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
  Na  Na0  4  0.4  0.6  0.32  1.0
  Co  Co1  2  0.0  0.0  0.02  1.0
  Si  Si2  2  0.0  0.0  0.0  1.0

Na Na Co Si
Na Na Co Si 0 1 - + o 2 3 o o + 