data_TaCu2Te
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.54
_cell_length_b   3.54
_cell_length_c   5.42
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TaCu2Te
_chemical_formula_sum   'Ta1 Cu2 Te1'
_cell_volume   67.98
_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
  Ta  Ta2  1  0.0  0.0  0.71  1.0
  Cu  Cu0  1  0.77  0.77  0.47  1.0
  Cu  Cu1  1  0.77  0.77  0.95  1.0
  Te  Te3  1  0.0  0.0  0.0  1.0

data_TaCu2Te
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.01
_cell_length_b   5.01
_cell_length_c   5.42
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   TaCu2Te
_chemical_formula_sum   'Ta2 Cu4 Te2'
_cell_volume   135.95
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Ta  Ta0  2  0.0  0.0  0.71  1.0
  Cu  Cu1  2  0.27  0.5  0.47  1.0
  Cu  Cu2  2  0.27  0.5  0.95  1.0
  Te  Te3  2  0.0  0.0  0.0  1.0

Ta Cu Cu Te
TaCu2Te crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two TaCu2Te clusters. Ta(1) is bonded in a 3-coordinate geometry to one Cu(1), one Cu(2), and one Te(1) atom. The Ta(1)-Cu(1) bond length is 1.73 Å. The Ta(1)-Cu(2) bond length is 1.73 Å. The Ta(1)-Te(1) bond length is 1.56 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a single-bond geometry to one Ta(1) atom. In the second Cu site, Cu(2) is bonded in a 2-coordinate geometry to one Ta(1) and one Te(1) atom. The Cu(2)-Te(1) bond length is 1.18 Å. Te(1) is bonded in a 2-coordinate geometry to one Ta(1) and one Cu(2) atom.