data_YBeRu2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.26
_cell_length_b   4.26
_cell_length_c   3.46
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YBeRu2
_chemical_formula_sum   'Y1 Be1 Ru2'
_cell_volume   62.78
_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
  Y  Y3  1  0.13  0.13  0.0  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0
  Ru  Ru1  1  0.0  0.13  0.73  1.0
  Ru  Ru2  1  0.13  0.0  0.73  1.0

data_YBeRu2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.03
_cell_length_b   6.03
_cell_length_c   3.46
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   YBeRu2
_chemical_formula_sum   'Y2 Be2 Ru4'
_cell_volume   125.57
_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
  Y  Y0  2  0.13  0.0  0.0  1.0
  Be  Be1  2  0.0  0.0  0.0  1.0
  Ru  Ru2  4  0.07  0.07  0.73  1.0

Y Be Ru Ru
BeYRu2 is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two BeYRu2 clusters. Be(1) is bonded in a distorted single-bond geometry to one Y(1) and two equivalent Ru(1) atoms. The Be(1)-Y(1) bond length is 0.79 Å. Both Be(1)-Ru(1) bond lengths are 1.09 Å. Y(1) is bonded in a 3-coordinate geometry to one Be(1) and two equivalent Ru(1) atoms. Both Y(1)-Ru(1) bond lengths are 1.09 Å. Ru(1) is bonded in a 3-coordinate geometry to one Be(1), one Y(1), and one Ru(1) atom. The Ru(1)-Ru(1) bond length is 0.79 Å.