data_Ge2RuSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.96
_cell_length_b   5.96
_cell_length_c   4.41
_cell_angle_alpha   105.45
_cell_angle_beta   105.45
_cell_angle_gamma   29.19
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ge2RuSe
_chemical_formula_sum   'Ge2 Ru1 Se1'
_cell_volume   73.57
_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
  Ge  Ge0  1  0.01  0.0  0.19  1.0
  Ge  Ge1  1  0.31  0.0  0.05  1.0
  Ru  Ru2  1  0.16  0.0  0.12  1.0
  Se  Se3  1  0.0  0.0  0.0  1.0

data_Ge2RuSe
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.01
_cell_length_b   4.41
_cell_length_c   5.96
_cell_angle_alpha   105.45
_cell_angle_beta   104.6
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ge2RuSe
_chemical_formula_sum   'Ge2 Ru1 Se1'
_cell_volume   73.57
_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
  Ge  Ge0  1  0.0  0.05  0.31  1.0
  Ge  Ge1  1  0.0  0.19  0.01  1.0
  Ru  Ru2  1  0.0  0.12  0.16  1.0
  Se  Se3  1  0.0  0.0  0.0  1.0

Ge Ge Ru Se
RuGe2Se crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one RuGe2Se cluster. Ru(1) is bonded in a 3-coordinate geometry to one Ge(1), one Ge(2), and one Se(1) atom. The Ru(1)-Ge(1) bond length is 1.02 Å. The Ru(1)-Ge(2) bond length is 1.02 Å. The Ru(1)-Se(1) bond length is 0.98 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 2-coordinate geometry to one Ru(1) and one Se(1) atom. The Ge(1)-Se(1) bond length is 0.84 Å. In the second Ge site, Ge(2) is bonded in a single-bond geometry to one Ru(1) atom. Se(1) is bonded in a 2-coordinate geometry to one Ru(1) and one Ge(1) atom.