data_MgNbIrPd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.51
_cell_length_b   4.51
_cell_length_c   4.51
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgNbIrPd
_chemical_formula_sum   'Mg1 Nb1 Ir1 Pd1'
_cell_volume   64.74
_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
  Mg  Mg1  1  0.0  0.0  0.0  1.0
  Nb  Nb2  1  0.19  0.19  0.19  1.0
  Ir  Ir0  1  0.78  0.78  0.78  1.0
  Pd  Pd3  1  0.59  0.59  0.59  1.0

data_MgNbIrPd
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.51
_cell_length_b   4.51
_cell_length_c   11.04
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   MgNbIrPd
_chemical_formula_sum   'Mg3 Nb3 Ir3 Pd3'
_cell_volume   194.22
_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
  Mg  Mg0  3  0.0  0.0  0.0  1.0
  Nb  Nb1  3  0.0  0.0  0.81  1.0
  Ir  Ir2  3  0.0  0.0  0.22  1.0
  Pd  Pd3  3  0.0  0.0  0.41  1.0

Mg Nb Ir Pd
Mg Nb Ir Pd 0 2 - - - 0 3 - - o 0 3 - o - 0 3 o - - 0 1 o o o 1 2 - - o 1 2 - o - 1 2 o - - 1 3 - o o 1 3 o - o 1 3 o o - 2 3 o o o 
MgNbIrPd crystallizes in the trigonal R3m space group. Mg(1) is bonded in a 11-coordinate geometry to four equivalent Nb(1), four equivalent Ir(1), and three equivalent Pd(1) atoms. There is one shorter (2.06 Å) and three longer (3.06 Å) Mg(1)-Nb(1) bond lengths. There is one shorter (2.42 Å) and three longer (2.89 Å) Mg(1)-Ir(1) bond lengths. All Mg(1)-Pd(1) bond lengths are 2.72 Å. Nb(1) is bonded in a 7-coordinate geometry to four equivalent Mg(1), three equivalent Ir(1), and three equivalent Pd(1) atoms. All Nb(1)-Ir(1) bond lengths are 2.72 Å. All Nb(1)-Pd(1) bond lengths are 2.72 Å. Ir(1) is bonded in a 8-coordinate geometry to four equivalent Mg(1), three equivalent Nb(1), and one Pd(1) atom. The Ir(1)-Pd(1) bond length is 2.06 Å. Pd(1) is bonded in a 7-coordinate geometry to three equivalent Mg(1), three equivalent Nb(1), and one Ir(1) atom.