data_Cu3Tc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.5
_cell_length_b   4.35
_cell_length_c   4.69
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cu3Tc
_chemical_formula_sum   'Cu3 Tc1'
_cell_volume   51.09
_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
  Cu  Cu0  1  0.25  0.0  0.68  1.0
  Cu  Cu1  1  0.0  0.0  0.36  1.0
  Cu  Cu2  1  0.0  0.18  0.91  1.0
  Tc  Tc3  1  0.25  0.18  0.56  1.0

data_Cu3Tc
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.5
_cell_length_b   4.35
_cell_length_c   4.69
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cu3Tc
_chemical_formula_sum   'Cu3 Tc1'
_cell_volume   51.09
_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
  Cu  Cu0  1  0.0  0.0  0.36  1.0
  Cu  Cu1  1  0.0  0.18  0.91  1.0
  Cu  Cu2  1  0.25  0.0  0.68  1.0
  Tc  Tc3  1  0.25  0.18  0.56  1.0

Cu Cu Cu Tc
TcCu3 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one TcCu3 cluster. Tc(1) is bonded in a distorted single-bond geometry to one Cu(1) and one Cu(2) atom. The Tc(1)-Cu(1) bond length is 0.97 Å. The Tc(1)-Cu(2) bond length is 1.35 Å. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted single-bond geometry to one Tc(1) and one Cu(3) atom. The Cu(1)-Cu(3) bond length is 1.45 Å. In the second Cu site, Cu(2) is bonded in a 1-coordinate geometry to one Tc(1) atom. In the third Cu site, Cu(3) is bonded in a 1-coordinate geometry to one Cu(1) atom.