data_TaBe2Cr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.66
_cell_length_b   4.66
_cell_length_c   4.66
_cell_angle_alpha   136.12
_cell_angle_beta   136.12
_cell_angle_gamma   63.8
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TaBe2Cr
_chemical_formula_sum   'Ta1 Be2 Cr1'
_cell_volume   47.97
_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  Ta3  1  0.0  0.74  0.98  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0
  Be  Be1  1  0.74  0.0  0.98  1.0
  Cr  Cr2  1  0.0  0.0  0.96  1.0

data_TaBe2Cr
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.48
_cell_length_b   3.48
_cell_length_c   4.66
_cell_angle_alpha   111.94
_cell_angle_beta   111.94
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TaBe2Cr
_chemical_formula_sum   'Ta1 Be2 Cr1'
_cell_volume   47.97
_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  Ta0  1  0.24  0.98  0.24  1.0
  Be  Be1  1  0.0  0.0  0.0  1.0
  Be  Be2  1  0.98  0.24  0.24  1.0
  Cr  Cr3  1  0.96  0.96  0.96  1.0

Ta Be Be Cr
Be2TaCr crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Be2TaCr 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), one Ta(1), and one Cr(1) atom. The Be(1)-Be(2) bond length is 1.13 Å. The Be(1)-Ta(1) bond length is 1.13 Å. The Be(1)-Cr(1) bond length is 0.20 Å. In the second Be site, Be(2) is bonded in a 2-coordinate geometry to one Be(1) and one Ta(1) atom. The Be(2)-Ta(1) bond length is 1.28 Å. Ta(1) is bonded in a 2-coordinate geometry to one Be(1) and one Be(2) atom. Cr(1) is bonded in a single-bond geometry to one Be(1) atom.