data_Co2CuTc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.57
_cell_length_b   2.57
_cell_length_c   7.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Co2CuTc
_chemical_formula_sum   'Co2 Cu1 Tc1'
_cell_volume   48.34
_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
  Co  Co0  1  0.0  0.0  0.13  1.0
  Co  Co1  1  0.28  0.28  0.74  1.0
  Cu  Cu2  1  0.0  0.0  0.56  1.0
  Tc  Tc3  1  0.28  0.28  0.58  1.0

data_Co2CuTc
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.63
_cell_length_b   3.63
_cell_length_c   7.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Co2CuTc
_chemical_formula_sum   'Co4 Cu2 Tc2'
_cell_volume   96.69
_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
  Co  Co0  2  0.0  0.0  0.13  1.0
  Co  Co1  2  0.28  0.0  0.74  1.0
  Cu  Cu2  2  0.0  0.0  0.56  1.0
  Tc  Tc3  2  0.28  0.0  0.58  1.0

Co Co Cu Tc
TcCo2Cu crystallizes in the monoclinic Cm space group. Tc(1) is bonded in a distorted water-like geometry to one Co(2) and one Cu(1) atom. The Tc(1)-Co(2) bond length is 1.15 Å. The Tc(1)-Cu(1) bond length is 1.05 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one Co(2), four equivalent Co(1), and one Cu(1) atom to form a mixture of distorted corner and edge-sharing CoCo5Cu octahedra. The corner-sharing octahedra are not tilted. The Co(1)-Co(2) bond length is 3.02 Å. All Co(1)-Co(1) bond lengths are 2.57 Å. The Co(1)-Cu(1) bond length is 3.13 Å. In the second Co site, Co(2) is bonded in a single-bond geometry to one Tc(1) and one Co(1) atom. Cu(1) is bonded in a distorted single-bond geometry to one Tc(1) and one Co(1) atom.