data_BeAs2Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.4
_cell_length_b   3.89
_cell_length_c   4.39
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeAs2Ru
_chemical_formula_sum   'Be1 As2 Ru1'
_cell_volume   58.05
_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  Be2  1  0.0  0.0  0.0  1.0
  As  As0  1  0.7  0.94  0.0  1.0
  As  As1  1  0.7  0.0  0.19  1.0
  Ru  Ru3  1  0.0  0.94  0.19  1.0

data_BeAs2Ru
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.4
_cell_length_b   3.89
_cell_length_c   4.39
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeAs2Ru
_chemical_formula_sum   'Be1 As2 Ru1'
_cell_volume   58.05
_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  0.0  0.0  1.0
  As  As1  1  0.7  0.0  0.19  1.0
  As  As2  1  0.7  0.94  0.0  1.0
  Ru  Ru3  1  0.0  0.94  0.19  1.0

Be As As Ru
Be As As Ru 0 1 - - o 0 3 o - o 1 2 o + o 2 3 + - o 
BeRuAs2 is alpha Po structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one BeRuAs2 cluster. Be(1) is bonded in a distorted L-shaped geometry to one Ru(1) and one As(1) atom. The Be(1)-Ru(1) bond length is 0.88 Å. The Be(1)-As(1) bond length is 1.04 Å. Ru(1) is bonded in a distorted single-bond geometry to one Be(1) and one As(2) atom. The Ru(1)-As(2) bond length is 1.04 Å. There are two inequivalent As sites. In the first As site, As(1) is bonded in a distorted L-shaped geometry to one Be(1) and one As(2) atom. The As(1)-As(2) bond length is 0.88 Å. In the second As site, As(2) is bonded in a distorted L-shaped geometry to one Ru(1) and one As(1) atom.