data_MgTaAlRe
_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   MgTaAlRe
_chemical_formula_sum   'Mg1 Ta1 Al1 Re1'
_cell_volume   64.77
_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
  Ta  Ta3  1  0.78  0.78  0.78  1.0
  Al  Al0  1  0.59  0.59  0.59  1.0
  Re  Re2  1  0.19  0.19  0.19  1.0

data_MgTaAlRe
_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   MgTaAlRe
_chemical_formula_sum   'Mg3 Ta3 Al3 Re3'
_cell_volume   194.32
_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
  Ta  Ta1  3  0.0  0.0  0.22  1.0
  Al  Al2  3  0.0  0.0  0.41  1.0
  Re  Re3  3  0.0  0.0  0.81  1.0

Mg Ta Al Re
Mg Ta Al Re 0 1 - - - 0 2 - - o 0 2 - o - 0 2 o - - 0 3 o o o 1 2 o o o 1 3 o + + 1 3 + o + 1 3 + + o 2 3 o o + 2 3 o + o 2 3 + o o 
MgTaReAl crystallizes in the trigonal R3m space group. Mg(1) is bonded in a 1-coordinate geometry to one Ta(1), one Re(1), and three equivalent Al(1) atoms. The Mg(1)-Ta(1) bond length is 2.41 Å. The Mg(1)-Re(1) bond length is 2.07 Å. All Mg(1)-Al(1) bond lengths are 2.72 Å. Ta(1) is bonded in a 5-coordinate geometry to one Mg(1), three equivalent Re(1), and one Al(1) atom. All Ta(1)-Re(1) bond lengths are 2.72 Å. The Ta(1)-Al(1) bond length is 2.07 Å. Re(1) is bonded in a distorted single-bond geometry to one Mg(1), three equivalent Ta(1), and three equivalent Al(1) atoms. All Re(1)-Al(1) bond lengths are 2.72 Å. Al(1) is bonded in a 7-coordinate geometry to three equivalent Mg(1), one Ta(1), and three equivalent Re(1) atoms.