data_AlSb2Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.85
_cell_length_b   4.85
_cell_length_c   4.85
_cell_angle_alpha   121.8
_cell_angle_beta   121.8
_cell_angle_gamma   86.9
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlSb2Ru
_chemical_formula_sum   'Al1 Sb2 Ru1'
_cell_volume   78.17
_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
  Al  Al0  1  0.0  0.0  0.0  1.0
  Sb  Sb2  1  0.0  0.36  0.76  1.0
  Sb  Sb3  1  0.36  0.0  0.76  1.0
  Ru  Ru1  1  0.0  0.0  0.52  1.0

data_AlSb2Ru
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.67
_cell_length_b   6.67
_cell_length_c   4.85
_cell_angle_alpha   90.0
_cell_angle_beta   133.45
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   AlSb2Ru
_chemical_formula_sum   'Al2 Sb4 Ru2'
_cell_volume   156.34
_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+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Al  Al0  2  0.0  0.0  0.0  1.0
  Sb  Sb1  4  0.42  0.18  0.6  1.0
  Ru  Ru2  2  0.48  0.0  0.48  1.0

Al Sb Sb Ru
RuAlSb2 crystallizes in the monoclinic Cm space group. Ru(1) is bonded in a 4-coordinate geometry to two equivalent Al(1) and two equivalent Sb(1) atoms. There is one shorter (2.34 Å) and one longer (2.51 Å) Ru(1)-Al(1) bond length. Both Ru(1)-Sb(1) bond lengths are 1.49 Å. Al(1) is bonded in a 6-coordinate geometry to two equivalent Ru(1) and four equivalent Sb(1) atoms. There are two shorter (2.55 Å) and two longer (2.69 Å) Al(1)-Sb(1) bond lengths. Sb(1) is bonded in a distorted single-bond geometry to one Ru(1) and two equivalent Al(1) atoms.