data_NaTcBi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.52
_cell_length_b   9.52
_cell_length_c   9.52
_cell_angle_alpha   21.52
_cell_angle_beta   21.52
_cell_angle_gamma   21.52
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaTcBi2
_chemical_formula_sum   'Na1 Tc1 Bi2'
_cell_volume   101.74
_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  Na2  1  0.0  0.0  0.0  1.0
  Tc  Tc3  1  0.0  0.0  0.95  1.0
  Bi  Bi0  1  0.0  0.0  0.3  1.0
  Bi  Bi1  1  0.0  0.0  0.59  1.0

data_NaTcBi2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.16
_cell_length_b   3.55
_cell_length_c   9.52
_cell_angle_alpha   90.0
_cell_angle_beta   102.45
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaTcBi2
_chemical_formula_sum   'Na2 Tc2 Bi4'
_cell_volume   203.49
_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  0.0  1.0
  Tc  Tc1  2  -0.0  0.0  0.05  1.0
  Bi  Bi2  2  -0.0  0.0  0.41  1.0
  Bi  Bi3  2  0.0  0.0  0.7  1.0

Na Tc Bi Bi
Na Tc Bi Bi 0 1 o o - 0 2 o o o 0 3 o o - 1 2 o o + 1 3 o o o 2 2 o + - 2 2 + - o 2 2 + o - 2 3 o o o 3 3 o + - 3 3 + - o 3 3 + o - 
NaTcBi2 crystallizes in the monoclinic Cm space group. Na(1) is bonded in a single-bond geometry to one Tc(1) and one Bi(1) atom. The Na(1)-Tc(1) bond length is 0.52 Å. The Na(1)-Bi(1) bond length is 2.85 Å. Tc(1) is bonded in a single-bond geometry to one Na(1) and one Bi(2) atom. The Tc(1)-Bi(2) bond length is 3.37 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a distorted single-bond geometry to one Na(1) and one Bi(2) atom. The Bi(1)-Bi(2) bond length is 2.77 Å. In the second Bi site, Bi(2) is bonded in a distorted linear geometry to one Tc(1), one Bi(1), and six equivalent Bi(2) atoms. All Bi(2)-Bi(2) bond lengths are 3.55 Å.