data_B2RuSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.02
_cell_length_b   4.02
_cell_length_c   2.83
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   101.31
_symmetry_Int_Tables_number   1
_chemical_formula_structural   B2RuSe
_chemical_formula_sum   'B2 Ru1 Se1'
_cell_volume   44.95
_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
  B  B0  1  0.28  0.56  0.42  1.0
  B  B1  1  0.28  0.44  0.42  1.0
  Ru  Ru2  1  0.55  0.0  0.0  1.0
  Se  Se3  1  0.0  0.0  0.0  1.0

data_B2RuSe
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.83
_cell_length_b   4.02
_cell_length_c   4.02
_cell_angle_alpha   101.31
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   B2RuSe
_chemical_formula_sum   'B2 Ru1 Se1'
_cell_volume   44.95
_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
  B  B0  1  0.42  0.28  0.44  1.0
  B  B1  1  0.42  0.28  0.56  1.0
  Ru  Ru2  1  -0.0  0.55  0.0  1.0
  Se  Se3  1  0.0  0.0  0.0  1.0

B B Ru Se
B B Ru Se 0 1 o o o 0 2 o + o 1 3 o o o 2 3 o o o 2 3 + o o 
RuB2Se crystallizes in the triclinic P1 space group. Ru(1) is bonded in a 1-coordinate geometry to two equivalent Se(1) atoms. There is one shorter (1.81 Å) and one longer (2.22 Å) Ru(1)-Se(1) bond length. There are two inequivalent B sites. In the first B site, B(1) is bonded in a distorted single-bond geometry to one B(2) and one Se(1) atom. The B(1)-B(2) bond length is 0.45 Å. The B(1)-Se(1) bond length is 2.56 Å. In the second B site, B(2) is bonded in a 1-coordinate geometry to one B(1) and two equivalent Se(1) atoms. There is one shorter (2.24 Å) and one longer (2.53 Å) B(2)-Se(1) bond length. Se(1) is bonded in a 5-coordinate geometry to two equivalent Ru(1), one B(1), and two equivalent B(2) atoms.