data_VTc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.73
_cell_length_b   4.23
_cell_length_c   4.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   VTc
_chemical_formula_sum   'V2 Tc2'
_cell_volume   56.96
_cell_formula_units_Z   2
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
  V  V2  1  0.0  0.0  0.65  1.0
  V  V3  1  0.36  0.12  0.28  1.0
  Tc  Tc0  1  0.0  0.0  0.17  1.0
  Tc  Tc1  1  0.36  0.12  0.76  1.0

data_VTc
_symmetry_space_group_name_H-M   P-1
_cell_length_a   2.73
_cell_length_b   4.23
_cell_length_c   4.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   VTc
_chemical_formula_sum   'V2 Tc2'
_cell_volume   56.96
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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
  V  V0  2  0.18  0.06  0.82  1.0
  Tc  Tc1  2  0.18  0.06  0.3  1.0

V V Tc Tc
V V Tc Tc 0 3 o o o 1 2 o o o 