data_Ni4RuBr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.79
_cell_length_b   4.79
_cell_length_c   4.79
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ni4RuBr
_chemical_formula_sum   'Ni4 Ru1 Br1'
_cell_volume   77.76
_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
  Ni  Ni1  1  0.23  0.23  0.55  1.0
  Ni  Ni2  1  0.23  0.55  0.23  1.0
  Ni  Ni3  1  0.55  0.23  0.23  1.0
  Ni  Ni4  1  0.55  0.55  0.55  1.0
  Ru  Ru5  1  0.08  0.08  0.08  1.0
  Br  Br0  1  0.0  0.0  0.0  1.0

data_Ni4RuBr
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.79
_cell_length_b   4.79
_cell_length_c   11.74
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Ni4RuBr
_chemical_formula_sum   'Ni12 Ru3 Br3'
_cell_volume   233.29
_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
  Ni  Ni0  9  0.11  0.21  0.67  1.0
  Ni  Ni1  3  0.0  0.0  0.45  1.0
  Ru  Ru2  3  0.0  0.0  0.92  1.0
  Br  Br3  3  0.0  0.0  0.0  1.0

Ni Ni Ni Ni Ru Br
Ni Ni Ni Ni Ru Br 0 2 o o o 0 1 o o o 0 3 o o o 0 3 o - o 0 3 - o o 1 2 o o o 1 3 o o o 1 3 o o - 1 3 - o o 2 3 o o o 2 3 o o - 2 3 o - o 3 4 o o + 3 4 o + o 3 4 + o o 3 5 o + + 3 5 + o + 3 5 + + o 4 5 o o o 
RuNi4Br crystallizes in the trigonal R3m space group. Ru(1) is bonded in a single-bond geometry to three equivalent Ni(2) and one Br(1) atom. All Ru(1)-Ni(2) bond lengths are 3.17 Å. The Ru(1)-Br(1) bond length is 0.96 Å. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 1-coordinate geometry to three equivalent Ni(2) and one Br(1) atom. There is one shorter (2.65 Å) and two longer (2.82 Å) Ni(1)-Ni(2) bond lengths. The Ni(1)-Br(1) bond length is 1.88 Å. In the second Ni site, Ni(2) is bonded in a 15-coordinate geometry to three equivalent Ru(1), nine equivalent Ni(1), and three equivalent Br(1) atoms. All Ni(2)-Br(1) bond lengths are 3.10 Å. Br(1) is bonded in a distorted single-bond geometry to one Ru(1), three equivalent Ni(1), and three equivalent Ni(2) atoms.