data_CuTcAg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.81
_cell_length_b   3.81
_cell_length_c   4.39
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CuTcAg2
_chemical_formula_sum   'Cu1 Tc1 Ag2'
_cell_volume   63.88
_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  Cu2  1  0.0  0.0  0.0  1.0
  Tc  Tc3  1  0.91  0.91  0.0  1.0
  Ag  Ag0  1  0.91  0.0  0.2  1.0
  Ag  Ag1  1  0.0  0.91  0.2  1.0

data_CuTcAg2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.39
_cell_length_b   5.39
_cell_length_c   4.39
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CuTcAg2
_chemical_formula_sum   'Cu2 Tc2 Ag4'
_cell_volume   127.75
_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
  Cu  Cu0  2  0.0  0.0  0.0  1.0
  Tc  Tc1  2  0.41  0.5  -0.0  1.0
  Ag  Ag2  4  0.45  0.45  0.2  1.0

Cu Tc Ag Ag
Cu Tc Ag Ag 0 1 - - o 2 3 + - o 
TcAg2Cu is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two TcAg2Cu clusters. Tc(1) is bonded in a 3-coordinate geometry to two equivalent Ag(1) and one Cu(1) atom. Both Tc(1)-Ag(1) bond lengths are 0.93 Å. The Tc(1)-Cu(1) bond length is 0.50 Å. Ag(1) is bonded in a 3-coordinate geometry to one Tc(1), one Ag(1), and one Cu(1) atom. The Ag(1)-Ag(1) bond length is 0.50 Å. The Ag(1)-Cu(1) bond length is 0.93 Å. Cu(1) is bonded in a 3-coordinate geometry to one Tc(1) and two equivalent Ag(1) atoms.