data_Tc3Se4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   15.06
_cell_length_b   15.06
_cell_length_c   15.06
_cell_angle_alpha   168.52
_cell_angle_beta   168.52
_cell_angle_gamma   16.26
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tc3Se4
_chemical_formula_sum   'Tc3 Se4'
_cell_volume   135.26
_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
  Tc  Tc4  1  0.0  0.0  0.0  1.0
  Tc  Tc5  1  0.0  0.0  0.39  1.0
  Tc  Tc6  1  0.0  0.0  0.42  1.0
  Se  Se0  1  0.0  0.0  0.75  1.0
  Se  Se1  1  0.0  0.0  0.07  1.0
  Se  Se2  1  0.0  0.0  0.48  1.0
  Se  Se3  1  0.0  0.0  0.34  1.0

data_Tc3Se4
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.26
_cell_length_b   4.26
_cell_length_c   15.06
_cell_angle_alpha   90.0
_cell_angle_beta   98.13
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Tc3Se4
_chemical_formula_sum   'Tc6 Se8'
_cell_volume   270.52
_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
  Tc  Tc0  2  0.0  0.0  0.0  1.0
  Tc  Tc1  2  0.0  0.0  0.58  1.0
  Tc  Tc2  2  0.0  0.0  0.61  1.0
  Se  Se3  2  0.0  0.0  0.25  1.0
  Se  Se4  2  0.0  0.0  0.52  1.0
  Se  Se5  2  0.0  0.0  0.66  1.0
  Se  Se6  2  0.0  0.0  0.93  1.0

Tc Tc Tc Se Se Se Se