data_Tc4C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.25
_cell_length_b   7.25
_cell_length_c   7.25
_cell_angle_alpha   153.81
_cell_angle_beta   153.81
_cell_angle_gamma   37.37
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tc4C
_chemical_formula_sum   'Tc4 C1'
_cell_volume   74.03
_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  Tc1  1  0.64  0.0  0.43  1.0
  Tc  Tc2  1  0.0  0.64  0.43  1.0
  Tc  Tc3  1  0.0  0.0  0.09  1.0
  Tc  Tc4  1  0.0  0.0  0.64  1.0
  C  C0  1  0.0  0.0  0.0  1.0

data_Tc4C
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.64
_cell_length_b   4.64
_cell_length_c   7.25
_cell_angle_alpha   90.0
_cell_angle_beta   108.69
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Tc4C
_chemical_formula_sum   'Tc8 C2'
_cell_volume   148.06
_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  4  0.32  0.32  0.21  1.0
  Tc  Tc1  2  0.0  0.0  0.36  1.0
  Tc  Tc2  2  0.0  0.0  0.91  1.0
  C  C3  2  0.0  0.0  0.0  1.0

Tc Tc Tc Tc C
Tc Tc Tc Tc C 0 1 + - o 0 3 + o o 1 3 o + o 2 4 o o o 