data_Mg2SiTc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.92
_cell_length_b   4.92
_cell_length_c   4.92
_cell_angle_alpha   132.95
_cell_angle_beta   132.95
_cell_angle_gamma   68.74
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg2SiTc
_chemical_formula_sum   'Mg2 Si1 Tc1'
_cell_volume   62.61
_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
  Mg  Mg0  1  0.0  0.0  0.0  1.0
  Mg  Mg1  1  0.96  0.0  0.03  1.0
  Si  Si2  1  0.0  0.0  0.06  1.0
  Tc  Tc3  1  0.0  0.96  0.03  1.0

data_Mg2SiTc
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.93
_cell_length_b   3.93
_cell_length_c   4.92
_cell_angle_alpha   113.53
_cell_angle_beta   113.53
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg2SiTc
_chemical_formula_sum   'Mg2 Si1 Tc1'
_cell_volume   62.61
_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
  Mg  Mg0  1  0.0  0.0  0.0  1.0
  Mg  Mg1  1  0.97  0.0  0.93  1.0
  Tc  Tc2  1  0.93  0.96  0.93  1.0
  Si  Si3  1  0.94  0.0  0.94  1.0

Mg Mg Si Tc