data_NaMnNb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.68
_cell_length_b   2.68
_cell_length_c   10.05
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaMnNb2
_chemical_formula_sum   'Na1 Mn1 Nb2'
_cell_volume   72.24
_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  0.0  0.33  1.0
  Mn  Mn0  1  0.34  0.34  0.76  1.0
  Nb  Nb2  1  0.34  0.34  0.29  1.0
  Nb  Nb3  1  0.0  0.0  0.69  1.0

data_NaMnNb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.79
_cell_length_b   3.79
_cell_length_c   10.05
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaMnNb2
_chemical_formula_sum   'Na2 Mn2 Nb4'
_cell_volume   144.48
_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  2  0.0  0.0  0.33  1.0
  Mn  Mn1  2  0.34  0.0  0.76  1.0
  Nb  Nb2  2  0.0  0.0  0.69  1.0
  Nb  Nb3  2  0.34  0.0  0.29  1.0

Na Mn Nb Nb
Na Mn Nb Nb 0 2 o o o 1 3 o o o 