data_SrTcNiRu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.56
_cell_length_b   4.56
_cell_length_c   4.56
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrTcNiRu
_chemical_formula_sum   'Sr1 Tc1 Ni1 Ru1'
_cell_volume   66.94
_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  Sr2  1  0.22  0.22  0.22  1.0
  Tc  Tc3  1  0.61  0.61  0.61  1.0
  Ni  Ni0  1  0.0  0.0  0.0  1.0
  Ru  Ru1  1  0.83  0.83  0.83  1.0

data_SrTcNiRu
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.56
_cell_length_b   4.56
_cell_length_c   11.16
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SrTcNiRu
_chemical_formula_sum   'Sr3 Tc3 Ni3 Ru3'
_cell_volume   200.83
_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  0.78  1.0
  Tc  Tc1  3  0.0  0.0  0.39  1.0
  Ni  Ni2  3  0.0  0.0  0.0  1.0
  Ru  Ru3  3  0.0  0.0  0.17  1.0

Sr Tc Ni Ru
SrTcRuNi crystallizes in the trigonal R3m space group. Sr(1) is bonded in a 10-coordinate geometry to three equivalent Tc(1), three equivalent Ru(1), and four equivalent Ni(1) atoms. All Sr(1)-Tc(1) bond lengths are 2.70 Å. All Sr(1)-Ru(1) bond lengths are 2.70 Å. There is one shorter (2.49 Å) and three longer (2.91 Å) Sr(1)-Ni(1) bond lengths. Tc(1) is bonded to three equivalent Sr(1) and one Ru(1) atom to form distorted corner-sharing TcSr3Ru tetrahedra. The Tc(1)-Ru(1) bond length is 2.49 Å. Ru(1) is bonded in a 5-coordinate geometry to three equivalent Sr(1), one Tc(1), and one Ni(1) atom. The Ru(1)-Ni(1) bond length is 1.85 Å. Ni(1) is bonded in a distorted linear geometry to four equivalent Sr(1) and one Ru(1) atom.