data_HfMgAg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.71
_cell_length_b   6.71
_cell_length_c   6.71
_cell_angle_alpha   153.45
_cell_angle_beta   153.45
_cell_angle_gamma   37.9
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfMgAg
_chemical_formula_sum   'Hf1 Mg1 Ag1'
_cell_volume   60.16
_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  Hf1  1  0.0  0.0  0.31  1.0
  Mg  Mg2  1  0.0  0.0  0.34  1.0
  Ag  Ag0  1  0.0  0.0  0.03  1.0

data_HfMgAg
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.36
_cell_length_b   4.36
_cell_length_c   6.71
_cell_angle_alpha   90.0
_cell_angle_beta   108.95
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   HfMgAg
_chemical_formula_sum   'Hf2 Mg2 Ag2'
_cell_volume   120.32
_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  0.31  0.0  0.31  1.0
  Mg  Mg1  2  0.34  0.0  0.34  1.0
  Ag  Ag2  2  0.03  0.0  0.03  1.0

Hf Mg Ag
MgHfAg is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two MgHfAg clusters. Mg(1) is bonded in a single-bond geometry to one Hf(1) atom. The Mg(1)-Hf(1) bond length is 0.15 Å. Hf(1) is bonded in a linear geometry to one Mg(1) and one Ag(1) atom. The Hf(1)-Ag(1) bond length is 1.88 Å. Ag(1) is bonded in a single-bond geometry to one Hf(1) atom.