data_HfAg2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.05
_cell_length_b   10.05
_cell_length_c   10.05
_cell_angle_alpha   17.15
_cell_angle_beta   17.15
_cell_angle_gamma   17.15
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfAg2Ge
_chemical_formula_sum   'Hf1 Ag2 Ge1'
_cell_volume   76.93
_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
  Hf  Hf3  1  0.0  0.0  0.84  1.0
  Ag  Ag0  1  0.0  0.0  0.47  1.0
  Ag  Ag1  1  0.0  0.0  0.22  1.0
  Ge  Ge2  1  0.0  0.0  0.0  1.0

data_HfAg2Ge
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.19
_cell_length_b   3.0
_cell_length_c   10.05
_cell_angle_alpha   90.0
_cell_angle_beta   99.91
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   HfAg2Ge
_chemical_formula_sum   'Hf2 Ag4 Ge2'
_cell_volume   153.86
_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  0.0  0.0  0.16  1.0
  Ag  Ag1  2  0.0  0.0  0.53  1.0
  Ag  Ag2  2  0.0  0.0  0.78  1.0
  Ge  Ge3  2  0.0  0.0  0.0  1.0

Hf Ag Ag Ge
Hf Ag Ag Ge 0 3 o o + 1 1 o + - 1 1 + - o 1 1 + o - 1 2 o o o 2 3 o o o 
HfAg2Ge crystallizes in the monoclinic Cm space group. Hf(1) is bonded in a single-bond geometry to one Ag(1) and one Ge(1) atom. The Hf(1)-Ag(1) bond length is 3.81 Å. The Hf(1)-Ge(1) bond length is 1.56 Å. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one Hf(1), one Ag(2), and six equivalent Ag(1) atoms to form a mixture of distorted corner and edge-sharing AgHfAg7 hexagonal bipyramids. The Ag(1)-Ag(2) bond length is 2.43 Å. All Ag(1)-Ag(1) bond lengths are 3.00 Å. In the second Ag site, Ag(2) is bonded in a 2-coordinate geometry to one Ag(1) and one Ge(1) atom. The Ag(2)-Ge(1) bond length is 2.25 Å. Ge(1) is bonded in a distorted single-bond geometry to one Hf(1) and one Ag(2) atom.