data_HfTcAg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.8
_cell_length_b   2.8
_cell_length_c   8.99
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   94.36
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfTcAg2
_chemical_formula_sum   'Hf1 Tc1 Ag2'
_cell_volume   70.22
_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
  Hf  Hf2  1  0.0  0.0  0.5  1.0
  Tc  Tc3  1  0.0  0.0  0.0  1.0
  Ag  Ag0  1  0.9  0.0  0.17  1.0
  Ag  Ag1  1  0.9  0.0  0.82  1.0

data_HfTcAg2
_symmetry_space_group_name_H-M   Pm
_cell_length_a   2.8
_cell_length_b   8.99
_cell_length_c   2.8
_cell_angle_alpha   90.0
_cell_angle_beta   94.36
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   HfTcAg2
_chemical_formula_sum   'Hf1 Tc1 Ag2'
_cell_volume   70.22
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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
  Hf  Hf0  1  0.0  0.5  0.0  1.0
  Tc  Tc1  1  0.0  0.0  0.0  1.0
  Ag  Ag2  2  0.9  0.18  0.0  1.0

Hf Tc Ag Ag
HfTcAg2 crystallizes in the triclinic P1 space group. Hf(1) is bonded to four equivalent Hf(1), one Ag(1), and one Ag(2) atom to form a mixture of distorted corner and edge-sharing HfHf4Ag2 octahedra. The corner-sharing octahedra are not tilted. All Hf(1)-Hf(1) bond lengths are 2.80 Å. The Hf(1)-Ag(1) bond length is 2.92 Å. The Hf(1)-Ag(2) bond length is 2.92 Å. Tc(1) is bonded in a distorted bent 150 degrees geometry to one Ag(1) and one Ag(2) atom. The Tc(1)-Ag(1) bond length is 1.58 Å. The Tc(1)-Ag(2) bond length is 1.64 Å. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 2-coordinate geometry to one Hf(1) and one Tc(1) atom. In the second Ag site, Ag(2) is bonded in a 2-coordinate geometry to one Hf(1) and one Tc(1) atom.