data_SrGe4Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.57
_cell_length_b   5.57
_cell_length_c   5.57
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrGe4Ru
_chemical_formula_sum   'Sr1 Ge4 Ru1'
_cell_volume   122.5
_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  Sr5  1  0.0  0.0  0.0  1.0
  Ge  Ge0  1  0.92  0.92  0.96  1.0
  Ge  Ge1  1  0.92  0.96  0.92  1.0
  Ge  Ge2  1  0.96  0.92  0.92  1.0
  Ge  Ge3  1  0.96  0.96  0.96  1.0
  Ru  Ru4  1  0.91  0.91  0.91  1.0

data_SrGe4Ru
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.57
_cell_length_b   5.57
_cell_length_c   13.65
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SrGe4Ru
_chemical_formula_sum   'Sr3 Ge12 Ru3'
_cell_volume   367.5
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  3  0.0  0.0  0.0  1.0
  Ge  Ge1  9  0.02  0.98  0.07  1.0
  Ge  Ge2  3  0.0  0.0  0.04  1.0
  Ru  Ru3  3  0.0  0.0  0.09  1.0

Sr Ge Ge Ge Ge Ru
SrRuGe4 is Copper structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of three SrRuGe4 clusters. Sr(1) is bonded in a single-bond geometry to one Ge(2) atom. The Sr(1)-Ge(2) bond length is 0.48 Å. Ru(1) is bonded in a 3-coordinate geometry to three equivalent Ge(1) atoms. All Ru(1)-Ge(1) bond lengths are 0.33 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 4-coordinate geometry to one Ru(1), one Ge(2), and two equivalent Ge(1) atoms. The Ge(1)-Ge(2) bond length is 0.44 Å. Both Ge(1)-Ge(1) bond lengths are 0.26 Å. In the second Ge site, Ge(2) is bonded in a single-bond geometry to one Sr(1) and three equivalent Ge(1) atoms.