data_Na4Cr5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.37
_cell_length_b   8.37
_cell_length_c   8.37
_cell_angle_alpha   91.99
_cell_angle_beta   91.99
_cell_angle_gamma   158.53
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na4Cr5
_chemical_formula_sum   'Na4 Cr5'
_cell_volume   211.05
_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  Na5  1  0.0  0.88  0.0  1.0
  Na  Na6  1  0.0  0.75  0.0  1.0
  Na  Na7  1  0.75  0.0  0.0  1.0
  Na  Na8  1  0.88  0.0  0.0  1.0
  Cr  Cr0  1  0.0  0.0  0.0  1.0
  Cr  Cr1  1  0.53  0.47  0.56  1.0
  Cr  Cr2  1  0.47  0.53  0.56  1.0
  Cr  Cr3  1  0.35  0.35  0.0  1.0
  Cr  Cr4  1  0.47  0.47  0.56  1.0

data_Na4Cr5
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.12
_cell_length_b   16.45
_cell_length_c   8.37
_cell_angle_alpha   90.0
_cell_angle_beta   100.74
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Na4Cr5
_chemical_formula_sum   'Na8 Cr10'
_cell_volume   422.1
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  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  0.06  0.06  -0.0  1.0
  Na  Na1  4  0.12  0.12  -0.0  1.0
  Cr  Cr2  4  0.0  0.47  0.44  1.0
  Cr  Cr3  2  0.0  0.0  0.0  1.0
  Cr  Cr4  2  0.03  0.5  0.44  1.0
  Cr  Cr5  2  0.15  0.5  0.0  1.0

Na Na Na Na Cr Cr Cr Cr Cr