data_Ta2BeAg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.39
_cell_length_b   9.39
_cell_length_c   9.39
_cell_angle_alpha   17.48
_cell_angle_beta   17.48
_cell_angle_gamma   17.48
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta2BeAg
_chemical_formula_sum   'Ta2 Be1 Ag1'
_cell_volume   65.21
_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
  Ta  Ta2  1  0.0  0.0  0.26  1.0
  Ta  Ta3  1  0.0  0.0  0.91  1.0
  Be  Be1  1  0.0  0.0  0.86  1.0
  Ag  Ag0  1  0.0  0.0  0.57  1.0

data_Ta2BeAg
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.94
_cell_length_b   2.85
_cell_length_c   9.39
_cell_angle_alpha   90.0
_cell_angle_beta   100.11
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ta2BeAg
_chemical_formula_sum   'Ta4 Be2 Ag2'
_cell_volume   130.42
_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
  Ta  Ta0  2  0.0  0.0  0.09  1.0
  Ta  Ta1  2  0.0  0.0  0.74  1.0
  Be  Be2  2  0.0  0.0  0.14  1.0
  Ag  Ag3  2  0.0  0.0  0.43  1.0

Ta Ta Be Ag
BeTa2Ag crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two BeTa2Ag clusters. Be(1) is bonded in a single-bond geometry to one Ta(2) and one Ag(1) atom. The Be(1)-Ta(2) bond length is 0.44 Å. The Be(1)-Ag(1) bond length is 2.73 Å. There are two inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a distorted single-bond geometry to one Ag(1) atom. The Ta(1)-Ag(1) bond length is 2.95 Å. In the second Ta site, Ta(2) is bonded in a single-bond geometry to one Be(1) atom. Ag(1) is bonded in a distorted linear geometry to one Be(1) and one Ta(1) atom.