data_KLaEu2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.39
_cell_length_b   6.39
_cell_length_c   6.39
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KLaEu2
_chemical_formula_sum   'K1 La1 Eu2'
_cell_volume   184.47
_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
  K  K2  1  0.0  0.0  0.0  1.0
  La  La3  1  0.52  0.52  0.52  1.0
  Eu  Eu0  1  0.78  0.78  0.78  1.0
  Eu  Eu1  1  0.26  0.26  0.26  1.0

data_KLaEu2
_symmetry_space_group_name_H-M   R3m
_cell_length_a   6.39
_cell_length_b   6.39
_cell_length_c   15.65
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   KLaEu2
_chemical_formula_sum   'K3 La3 Eu6'
_cell_volume   553.42
_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
  K  K0  3  0.0  0.0  0.0  1.0
  La  La1  3  0.0  0.0  0.48  1.0
  Eu  Eu2  3  0.0  0.0  0.22  1.0
  Eu  Eu3  3  0.0  0.0  0.74  1.0

K La Eu Eu
KEu2La is Heusler structured and crystallizes in the trigonal R3m space group. K(1) is bonded in a 8-coordinate geometry to four equivalent Eu(1), four equivalent Eu(2), and six equivalent La(1) atoms. There is one shorter (3.48 Å) and three longer (4.08 Å) K(1)-Eu(1) bond lengths. There are three shorter (3.87 Å) and one longer (4.06 Å) K(1)-Eu(2) bond length. There are three shorter (4.36 Å) and three longer (4.69 Å) K(1)-La(1) bond lengths. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to four equivalent K(1) and four equivalent La(1) atoms. There are three shorter (3.87 Å) and one longer (4.06 Å) Eu(1)-La(1) bond length. In the second Eu site, Eu(2) is bonded in a distorted body-centered cubic geometry to four equivalent K(1) and four equivalent La(1) atoms. There are three shorter (3.87 Å) and one longer (4.06 Å) Eu(2)-La(1) bond length. La(1) is bonded in a 14-coordinate geometry to six equivalent K(1), four equivalent Eu(1), and four equivalent Eu(2) atoms.