data_NaMnNb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.75
_cell_length_b   2.75
_cell_length_c   7.91
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaMnNb
_chemical_formula_sum   'Na1 Mn1 Nb1'
_cell_volume   51.72
_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  0.52  1.0
  Mn  Mn0  1  1.0  0.59  0.78  1.0
  Nb  Nb2  1  0.37  0.79  0.52  1.0

data_NaMnNb
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.75
_cell_length_b   2.75
_cell_length_c   7.91
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaMnNb
_chemical_formula_sum   'Na1 Mn1 Nb1'
_cell_volume   51.72
_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  Na0  1  0.0  0.0  0.52  1.0
  Mn  Mn1  1  1.0  0.59  0.78  1.0
  Nb  Nb2  1  0.37  0.79  0.52  1.0

Na Mn Nb
Na Mn Nb 0 2 - - o 0 2 o - o 0 1 - - o 0 1 - o o 1 2 o - o 1 2 o o o 1 2 + o o 1 1 + + o 1 1 o + o 1 1 + o o 