data_Lu2GeIr
_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   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Lu2GeIr
_chemical_formula_sum   'Lu2 Ge1 Ir1'
_cell_volume   80.53
_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
  Lu  Lu2  1  0.14  0.14  0.14  1.0
  Lu  Lu3  1  0.71  0.71  0.71  1.0
  Ge  Ge0  1  0.0  0.0  0.0  1.0
  Ir  Ir1  1  0.43  0.43  0.43  1.0

data_Lu2GeIr
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.85
_cell_length_b   4.85
_cell_length_c   11.87
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Lu2GeIr
_chemical_formula_sum   'Lu6 Ge3 Ir3'
_cell_volume   241.59
_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
  Lu  Lu0  3  0.0  0.0  0.29  1.0
  Lu  Lu1  3  0.0  0.0  0.86  1.0
  Ge  Ge2  3  0.0  0.0  0.0  1.0
  Ir  Ir3  3  0.0  0.0  0.57  1.0

Lu Lu Ge Ir
Lu Lu Ge Ir 0 2 o o o 0 1 o - - 0 1 - o - 0 1 - - o 0 3 o o o 0 3 o o - 0 3 o - o 0 3 - o o 1 3 o o o 1 3 o o + 1 3 o + o 1 3 + o o 1 2 o + + 1 2 + o + 1 2 + + o 1 2 + + + 2 3 o o - 2 3 o - o 2 3 - o o 
Lu2IrGe is Heusler structured and crystallizes in the trigonal R3m space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a single-bond geometry to four equivalent Ir(1) and one Ge(1) atom. There are three shorter (2.85 Å) and one longer (3.40 Å) Lu(1)-Ir(1) bond length. The Lu(1)-Ge(1) bond length is 1.68 Å. In the second Lu site, Lu(2) is bonded in a 8-coordinate geometry to four equivalent Ir(1) and four equivalent Ge(1) atoms. There are three shorter (2.85 Å) and one longer (3.40 Å) Lu(2)-Ir(1) bond length. There are three shorter (2.85 Å) and one longer (3.40 Å) Lu(2)-Ge(1) bond length. Ir(1) is bonded in a 11-coordinate geometry to four equivalent Lu(1), four equivalent Lu(2), and three equivalent Ge(1) atoms. All Ir(1)-Ge(1) bond lengths are 3.01 Å. Ge(1) is bonded in a single-bond geometry to one Lu(1), four equivalent Lu(2), and three equivalent Ir(1) atoms.