data_Be2AlMo
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.67
_cell_length_b   3.67
_cell_length_c   3.49
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2AlMo
_chemical_formula_sum   'Be2 Al1 Mo1'
_cell_volume   47.07
_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  0.0  0.84  0.74  1.0
  Be  Be2  1  0.84  0.0  0.74  1.0
  Al  Al0  1  0.0  0.0  0.0  1.0
  Mo  Mo3  1  0.84  0.84  0.0  1.0

data_Be2AlMo
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.2
_cell_length_b   5.2
_cell_length_c   3.49
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Be2AlMo
_chemical_formula_sum   'Be4 Al2 Mo2'
_cell_volume   94.14
_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
  Be  Be0  4  0.42  0.42  0.74  1.0
  Al  Al1  2  0.0  0.0  0.0  1.0
  Mo  Mo2  2  0.34  0.5  0.0  1.0

Be Be Al Mo
Be2MoAl is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Be2MoAl clusters. Be(1) is bonded in a 3-coordinate geometry to one Be(1), one Mo(1), and one Al(1) atom. The Be(1)-Be(1) bond length is 0.85 Å. The Be(1)-Mo(1) bond length is 1.08 Å. The Be(1)-Al(1) bond length is 1.08 Å. Mo(1) is bonded in a 3-coordinate geometry to two equivalent Be(1) and one Al(1) atom. The Mo(1)-Al(1) bond length is 0.85 Å. Al(1) is bonded in a single-bond geometry to two equivalent Be(1) and one Mo(1) atom.