data_Tc3Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.14
_cell_length_b   5.14
_cell_length_c   5.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tc3Ag
_chemical_formula_sum   'Tc3 Ag1'
_cell_volume   135.93
_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
  Tc  Tc1  1  0.0  0.0  0.57  1.0
  Tc  Tc2  1  0.0  0.57  0.0  1.0
  Tc  Tc3  1  0.57  0.0  0.0  1.0
  Ag  Ag0  1  0.0  0.0  0.0  1.0

data_Tc3Ag
_symmetry_space_group_name_H-M   R3m
_cell_length_a   7.27
_cell_length_b   7.27
_cell_length_c   8.91
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Tc3Ag
_chemical_formula_sum   'Tc9 Ag3'
_cell_volume   407.8
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Tc  Tc0  9  0.05  0.52  0.52  1.0
  Ag  Ag1  3  0.0  0.0  0.0  1.0

Tc Tc Tc Ag
Tc Tc Tc Ag 0 3 o o + 1 3 o + o 2 3 + o o 
Tc3Ag is alpha Rhenium trioxide structured and crystallizes in the trigonal R3m space group. Tc(1) is bonded in a distorted linear geometry to two equivalent Ag(1) atoms. There is one shorter (2.21 Å) and one longer (2.94 Å) Tc(1)-Ag(1) bond length. Ag(1) is bonded to six equivalent Tc(1) atoms to form corner-sharing AgTc6 octahedra. The corner-sharing octahedra are not tilted.