data_YCu2Tc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.31
_cell_length_b   3.31
_cell_length_c   5.92
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YCu2Tc
_chemical_formula_sum   'Y1 Cu2 Tc1'
_cell_volume   64.96
_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
  Y  Y3  1  0.0  0.0  0.0  1.0
  Cu  Cu0  1  0.66  0.66  0.7  1.0
  Cu  Cu1  1  0.66  0.66  0.22  1.0
  Tc  Tc2  1  0.0  0.0  0.96  1.0

data_YCu2Tc
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.68
_cell_length_b   4.68
_cell_length_c   5.92
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   YCu2Tc
_chemical_formula_sum   'Y2 Cu4 Tc2'
_cell_volume   129.93
_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
  Y  Y0  2  0.0  0.0  0.0  1.0
  Tc  Tc1  2  0.0  0.0  0.96  1.0
  Cu  Cu2  2  0.16  0.5  0.22  1.0
  Cu  Cu3  2  0.16  0.5  0.7  1.0

Y Cu Cu Tc
Y Cu Cu Tc 0 3 o o - 0 1 - - - 0 2 - - o 1 3 + + o 2 3 + + - 
YTcCu2 crystallizes in the monoclinic Cm space group. Y(1) is bonded in a single-bond geometry to one Tc(1) and one Cu(2) atom. The Y(1)-Tc(1) bond length is 0.23 Å. The Y(1)-Cu(2) bond length is 2.07 Å. Tc(1) is bonded in a single-bond geometry to one Y(1) and three equivalent Cu(1) atoms. There is one shorter (2.22 Å) and two longer (2.89 Å) Tc(1)-Cu(1) bond lengths. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 4-coordinate geometry to three equivalent Tc(1) and one Cu(2) atom. The Cu(1)-Cu(2) bond length is 2.85 Å. In the second Cu site, Cu(2) is bonded in a distorted single-bond geometry to one Y(1) and one Cu(1) atom.