data_RuSeCl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.76
_cell_length_b   3.59
_cell_length_c   6.05
_cell_angle_alpha   90.0
_cell_angle_beta   112.18
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   RuSeCl2
_chemical_formula_sum   'Ru1 Se1 Cl2'
_cell_volume   95.67
_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
  Ru  Ru2  1  0.38  0.0  0.0  1.0
  Se  Se3  1  0.0  0.0  0.0  1.0
  Cl  Cl0  1  0.09  0.79  0.0  1.0
  Cl  Cl1  1  0.39  0.79  0.6  1.0

data_RuSeCl2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.59
_cell_length_b   4.76
_cell_length_c   6.05
_cell_angle_alpha   112.18
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   RuSeCl2
_chemical_formula_sum   'Ru1 Se1 Cl2'
_cell_volume   95.67
_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
  Ru  Ru0  1  0.0  0.62  0.0  1.0
  Se  Se1  1  0.0  0.0  0.0  1.0
  Cl  Cl2  1  0.21  0.61  0.4  1.0
  Cl  Cl3  1  0.21  0.91  1.0  1.0

Ru Se Cl Cl
RuSeCl2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one RuSeCl2 cluster. Ru(1) is bonded in a 1-coordinate geometry to one Cl(1) and one Cl(2) atom. The Ru(1)-Cl(1) bond length is 1.57 Å. The Ru(1)-Cl(2) bond length is 2.56 Å. Se(1) is bonded in a single-bond geometry to one Cl(1) atom. The Se(1)-Cl(1) bond length is 0.85 Å. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a distorted L-shaped geometry to one Ru(1) and one Se(1) atom. In the second Cl site, Cl(2) is bonded in a single-bond geometry to one Ru(1) atom.