data_Be2AlAg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.95
_cell_length_b   4.95
_cell_length_c   4.95
_cell_angle_alpha   147.44
_cell_angle_beta   128.71
_cell_angle_gamma   62.09
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2AlAg
_chemical_formula_sum   'Be2 Al1 Ag1'
_cell_volume   50.32
_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  Be2  1  0.39  0.0  0.19  1.0
  Be  Be3  1  0.0  0.0  0.96  1.0
  Al  Al1  1  0.0  0.0  0.47  1.0
  Ag  Ag0  1  0.39  0.0  0.09  1.0

data_Be2AlAg
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.77
_cell_length_b   4.28
_cell_length_c   4.95
_cell_angle_alpha   115.65
_cell_angle_beta   106.28
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2AlAg
_chemical_formula_sum   'Be2 Al1 Ag1'
_cell_volume   50.32
_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  0.0  0.19  0.81  1.0
  Be  Be1  1  0.0  0.96  0.96  1.0
  Al  Al2  1  0.0  0.47  0.47  1.0
  Ag  Ag3  1  0.0  0.09  0.7  1.0

Be Be Al Ag
Be2AgAl crystallizes in the triclinic P1 space group. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded in a single-bond geometry to one Be(2), one Ag(1), and one Al(1) atom. The Be(1)-Be(2) bond length is 1.49 Å. The Be(1)-Ag(1) bond length is 0.51 Å. The Be(1)-Al(1) bond length is 2.43 Å. In the second Be site, Be(2) is bonded in a 4-coordinate geometry to one Be(1), one Ag(1), and two equivalent Al(1) atoms. The Be(2)-Ag(1) bond length is 1.60 Å. There is one shorter (2.44 Å) and one longer (2.50 Å) Be(2)-Al(1) bond length. Ag(1) is bonded in a single-bond geometry to one Be(1), one Be(2), and two equivalent Al(1) atoms. There is one shorter (2.37 Å) and one longer (2.40 Å) Ag(1)-Al(1) bond length. Al(1) is bonded in a 7-coordinate geometry to one Be(1), two equivalent Be(2), two equivalent Ag(1), and two equivalent Al(1) atoms. Both Al(1)-Al(1) bond lengths are 2.77 Å.