data_Na2MnSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.86
_cell_length_b   4.86
_cell_length_c   6.15
_cell_angle_alpha   99.39
_cell_angle_beta   99.39
_cell_angle_gamma   37.81
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2MnSn
_chemical_formula_sum   'Na2 Mn1 Sn1'
_cell_volume   87.81
_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  0.13  0.0  0.01  1.0
  Na  Na2  1  0.46  0.0  0.52  1.0
  Mn  Mn0  1  0.6  0.0  0.96  1.0
  Sn  Sn3  1  0.03  0.0  0.59  1.0

data_Na2MnSn
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.15
_cell_length_b   4.86
_cell_length_c   6.15
_cell_angle_alpha   99.39
_cell_angle_beta   90.0
_cell_angle_gamma   108.9
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2MnSn
_chemical_formula_sum   'Na2 Mn1 Sn1'
_cell_volume   87.81
_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  0.54  0.48  1.0
  Na  Na1  1  0.0  0.87  0.99  1.0
  Mn  Mn2  1  0.0  0.4  0.04  1.0
  Sn  Sn3  1  0.0  0.97  0.41  1.0

Na Na Mn Sn
Na Na Mn Sn 0 3 o o - 0 2 - o - 0 2 o o - 1 3 o o o 1 3 + o o 1 2 o o o 