data_Be2FeAg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.01
_cell_length_b   4.01
_cell_length_c   2.71
_cell_angle_alpha   91.37
_cell_angle_beta   91.37
_cell_angle_gamma   92.98
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2FeAg
_chemical_formula_sum   'Be2 Fe1 Ag1'
_cell_volume   43.33
_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
  Be  Be1  1  0.33  0.45  0.35  1.0
  Be  Be2  1  0.33  0.55  0.35  1.0
  Fe  Fe3  1  0.0  0.0  0.0  1.0
  Ag  Ag0  1  0.76  0.0  0.0  1.0

data_Be2FeAg
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.71
_cell_length_b   4.01
_cell_length_c   4.01
_cell_angle_alpha   92.98
_cell_angle_beta   91.37
_cell_angle_gamma   91.37
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2FeAg
_chemical_formula_sum   'Be2 Fe1 Ag1'
_cell_volume   43.33
_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
  Be  Be0  1  0.35  0.33  0.45  1.0
  Be  Be1  1  0.35  0.33  0.55  1.0
  Fe  Fe2  1  0.0  0.0  0.0  1.0
  Ag  Ag3  1  -0.0  0.76  0.0  1.0

Be Be Fe Ag
(Be)2FeAg crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Be cluster and one FeAg cluster. In the Be cluster, there are two inequivalent Be sites. In the first Be site, Be(1) is bonded in a distorted single-bond geometry to one Be(2) atom. The Be(1)-Be(2) bond length is 0.38 Å. In the second Be site, Be(2) is bonded in a distorted single-bond geometry to one Be(1) atom. In the FeAg cluster, Fe(1) is bonded in a distorted single-bond geometry to one Ag(1) atom. The Fe(1)-Ag(1) bond length is 0.97 Å. Ag(1) is bonded in a single-bond geometry to one Fe(1) atom.