data_Be2ZnRu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.79
_cell_length_b   3.79
_cell_length_c   3.02
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2ZnRu
_chemical_formula_sum   'Be2 Zn1 Ru1'
_cell_volume   43.34
_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  0.89  0.51  1.0
  Be  Be1  1  0.89  0.0  0.51  1.0
  Zn  Zn3  1  0.0  0.0  0.0  1.0
  Ru  Ru2  1  0.89  0.89  0.0  1.0

data_Be2ZnRu
_symmetry_space_group_name_H-M   Amm2
_cell_length_a   3.02
_cell_length_b   5.35
_cell_length_c   5.35
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   38
_chemical_formula_structural   Be2ZnRu
_chemical_formula_sum   'Be4 Zn2 Ru2'
_cell_volume   86.68
_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, y, z'
  4  'x, -y, z'
  5  'x, y+1/2, z+1/2'
  6  '-x, -y+1/2, z+1/2'
  7  '-x, y+1/2, z+1/2'
  8  'x, -y+1/2, z+1/2'
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  0.5  0.05  0.95  1.0
  Zn  Zn1  2  0.0  0.0  0.0  1.0
  Ru  Ru2  2  0.0  0.0  0.89  1.0

Be Be Zn Ru
Be Be Zn Ru 0 1 - + o 2 3 - - o 
(Be)2ZnRu crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Be clusters and two ZnRu clusters. In each Be cluster, Be(1) is bonded in a single-bond geometry to one Be(1) atom. The Be(1)-Be(1) bond length is 0.57 Å. In each ZnRu cluster, Ru(1) is bonded in a single-bond geometry to one Zn(1) atom. The Ru(1)-Zn(1) bond length is 0.57 Å. Zn(1) is bonded in a single-bond geometry to one Ru(1) atom.