data_HfTiAg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.18
_cell_length_b   5.18
_cell_length_c   5.18
_cell_angle_alpha   132.71
_cell_angle_beta   132.71
_cell_angle_gamma   69.11
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfTiAg2
_chemical_formula_sum   'Hf1 Ti1 Ag2'
_cell_volume   73.58
_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  0.26  1.0
  Ti  Ti3  1  0.0  0.0  0.0  1.0
  Ag  Ag0  1  0.08  0.0  0.13  1.0
  Ag  Ag1  1  0.0  0.08  0.13  1.0

data_HfTiAg2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.87
_cell_length_b   5.87
_cell_length_c   5.18
_cell_angle_alpha   90.0
_cell_angle_beta   124.55
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   HfTiAg2
_chemical_formula_sum   'Hf2 Ti2 Ag4'
_cell_volume   147.17
_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
  Hf  Hf0  2  0.24  0.5  0.74  1.0
  Ti  Ti1  2  0.0  0.0  0.0  1.0
  Ag  Ag2  4  0.41  0.46  0.94  1.0

Hf Ti Ag Ag
HfTiAg2 is alpha Niobium phosphide-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two HfTiAg2 clusters. Hf(1) is bonded in a 2-coordinate geometry to two equivalent Ag(1) atoms. Both Hf(1)-Ag(1) bond lengths are 1.00 Å. Ti(1) is bonded in a 2-coordinate geometry to two equivalent Ag(1) atoms. Both Ti(1)-Ag(1) bond lengths are 0.51 Å. Ag(1) is bonded in a 3-coordinate geometry to one Hf(1), one Ti(1), and one Ag(1) atom. The Ag(1)-Ag(1) bond length is 0.45 Å.