data_Be2CrCu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.48
_cell_length_b   4.48
_cell_length_c   4.18
_cell_angle_alpha   107.59
_cell_angle_beta   107.59
_cell_angle_gamma   29.77
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2CrCu
_chemical_formula_sum   'Be2 Cr1 Cu1'
_cell_volume   39.56
_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  0.43  0.0  0.19  1.0
  Be  Be1  1  0.43  0.0  0.78  1.0
  Cr  Cr2  1  0.73  0.0  0.26  1.0
  Cu  Cu3  1  0.1  0.0  0.72  1.0

data_Be2CrCu
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.3
_cell_length_b   4.18
_cell_length_c   4.48
_cell_angle_alpha   107.59
_cell_angle_beta   104.88
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2CrCu
_chemical_formula_sum   'Be2 Cr1 Cu1'
_cell_volume   39.56
_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  0.43  1.0
  Be  Be1  1  0.0  0.78  0.43  1.0
  Cr  Cr2  1  0.0  0.26  0.73  1.0
  Cu  Cu3  1  0.0  0.72  0.1  1.0

Be Be Cr Cu
Be Be Cr Cu 0 2 o o o 1 3 o o o 
BeCrCuBe crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one BeCr cluster and one CuBe cluster. In the BeCr cluster, Be(1) is bonded in a distorted single-bond geometry to one Cr(1) atom. The Be(1)-Cr(1) bond length is 1.28 Å. Cr(1) is bonded in a distorted single-bond geometry to one Be(1) atom. In the CuBe cluster, Be(2) is bonded in a distorted single-bond geometry to one Cu(1) atom. The Be(2)-Cu(1) bond length is 1.40 Å. Cu(1) is bonded in a distorted single-bond geometry to one Be(2) atom.