data_RbLa2Eu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.3
_cell_length_b   6.3
_cell_length_c   6.3
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   RbLa2Eu
_chemical_formula_sum   'Rb1 La2 Eu1'
_cell_volume   176.7
_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
  Rb  Rb3  1  0.0  0.0  0.0  1.0
  La  La1  1  0.68  0.68  0.68  1.0
  La  La2  1  0.23  0.23  0.23  1.0
  Eu  Eu0  1  0.45  0.45  0.45  1.0

data_RbLa2Eu
_symmetry_space_group_name_H-M   R3m
_cell_length_a   6.3
_cell_length_b   6.3
_cell_length_c   15.43
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   RbLa2Eu
_chemical_formula_sum   'Rb3 La6 Eu3'
_cell_volume   530.09
_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
  Rb  Rb0  3  0.0  0.0  0.0  1.0
  La  La1  3  0.0  0.0  0.32  1.0
  La  La2  3  0.0  0.0  0.77  1.0
  Eu  Eu3  3  0.0  0.0  0.55  1.0

Rb La La Eu
RbEuLa2 is Heusler structured and crystallizes in the trigonal R3m space group. Rb(1) is bonded in a 10-coordinate geometry to three equivalent Eu(1), three equivalent La(1), and four equivalent La(2) atoms. All Rb(1)-Eu(1) bond lengths are 4.08 Å. All Rb(1)-La(1) bond lengths are 3.64 Å. There is one shorter (3.50 Å) and three longer (3.99 Å) Rb(1)-La(2) bond lengths. Eu(1) is bonded in a 11-coordinate geometry to three equivalent Rb(1), four equivalent La(1), and four equivalent La(2) atoms. There is one shorter (3.50 Å) and three longer (3.99 Å) Eu(1)-La(1) bond lengths. There is one shorter (3.50 Å) and three longer (3.99 Å) Eu(1)-La(2) bond lengths. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to three equivalent Rb(1) and four equivalent Eu(1) atoms. In the second La site, La(2) is bonded in a 8-coordinate geometry to four equivalent Rb(1) and four equivalent Eu(1) atoms.