data_[Tm4Mn8Cu4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tm  1.2500  1.7500  1.0950
  Mn  1.5500  1.4000  0.6483
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.4283]
_cell_length_b [9.2855]
_cell_length_c [5.9506]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [TmMn2Cu]
_chemical_formula_sum '[Tm4 Mn8 Cu4]'
_cell_volume [244.6810]
_cell_formula_units_Z [4]
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
[
  Tm  Tm0  4  0.0000  0.0959  0.7500  1
  Mn  Mn1  8  0.0000  0.3946  0.5729  1
  Cu  Cu2  4  0.0000  0.2026  0.2500  1
]