data_[Mg6Cr3Tc3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Cr  1.6600  1.4000  0.9400
  Tc  1.9000  1.3500  0.7417
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [2.8881]
_cell_length_b [2.8881]
_cell_length_c [27.7759]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [Mg2CrTc]
_chemical_formula_sum '[Mg6 Cr3 Tc3]'
_cell_volume [200.6428]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.7584  1
  Mg  Mg1  3  0.0000  0.0000  0.9911  1
  Cr  Cr2  3  0.0000  0.0000  0.2409  1
  Tc  Tc3  3  0.0000  0.0000  0.5095  1
]