data_SrCu2Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.19
_cell_length_b   3.19
_cell_length_c   7.07
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrCu2Ru
_chemical_formula_sum   'Sr1 Cu2 Ru1'
_cell_volume   72.15
_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
  Sr  Sr3  1  0.0  0.0  0.27  1.0
  Cu  Cu0  1  0.6  0.6  0.52  1.0
  Cu  Cu1  1  0.0  0.0  0.76  1.0
  Ru  Ru2  1  0.6  0.6  0.05  1.0

data_SrCu2Ru
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.52
_cell_length_b   4.52
_cell_length_c   7.07
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrCu2Ru
_chemical_formula_sum   'Sr2 Cu4 Ru2'
_cell_volume   144.3
_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
  Sr  Sr0  2  0.0  0.0  0.27  1.0
  Cu  Cu1  2  0.0  0.0  0.76  1.0
  Cu  Cu2  2  0.1  0.5  0.52  1.0
  Ru  Ru3  2  0.1  0.5  0.05  1.0

Sr Cu Cu Ru
SrRuCu2 crystallizes in the monoclinic Cm space group. Sr(1) is bonded in a 8-coordinate geometry to four equivalent Ru(1) and four equivalent Cu(1) atoms. There are a spread of Sr(1)-Ru(1) bond distances ranging from 2.38-3.10 Å. There are a spread of Sr(1)-Cu(1) bond distances ranging from 2.52-3.21 Å. Ru(1) is bonded in a 1-coordinate geometry to four equivalent Sr(1) and three equivalent Cu(2) atoms. There is one shorter (2.75 Å) and two longer (3.09 Å) Ru(1)-Cu(2) bond lengths. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 1-coordinate geometry to four equivalent Sr(1) and one Cu(2) atom. The Cu(1)-Cu(2) bond length is 2.51 Å. In the second Cu site, Cu(2) is bonded in a 4-coordinate geometry to three equivalent Ru(1) and one Cu(1) atom.