data_NaBe2Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.2
_cell_length_b   4.2
_cell_length_c   2.78
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaBe2Ru
_chemical_formula_sum   'Na1 Be2 Ru1'
_cell_volume   48.89
_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
  Na  Na2  1  0.0  0.0  0.0  1.0
  Be  Be0  1  0.1  0.0  0.39  1.0
  Be  Be1  1  0.0  0.1  0.39  1.0
  Ru  Ru3  1  0.1  0.1  0.0  1.0

data_NaBe2Ru
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.93
_cell_length_b   5.93
_cell_length_c   2.78
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaBe2Ru
_chemical_formula_sum   'Na2 Be4 Ru2'
_cell_volume   97.78
_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
  Na  Na0  2  0.0  0.0  0.0  1.0
  Be  Be1  4  0.05  0.05  0.39  1.0
  Ru  Ru2  2  0.1  0.0  0.0  1.0

Na Be Be Ru
(Be)2Ru(Na) crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Be clusters and two Ru(Na) clusters. In each Be cluster, Be(1) is bonded in a distorted single-bond geometry to one Be(1) atom. The Be(1)-Be(1) bond length is 0.58 Å. In each Ru(Na) cluster, Na(1) is bonded in a single-bond geometry to one Ru(1) atom. The Na(1)-Ru(1) bond length is 0.58 Å. Ru(1) is bonded in a single-bond geometry to one Na(1) atom.