data_LaPd2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.89
_cell_length_b   4.89
_cell_length_c   4.89
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaPd2Se
_chemical_formula_sum   'La1 Pd2 Se1'
_cell_volume   82.82
_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
  La  La0  1  0.46  0.46  0.46  1.0
  Pd  Pd1  1  0.73  0.73  0.73  1.0
  Pd  Pd2  1  0.19  0.19  0.19  1.0
  Se  Se3  1  0.0  0.0  0.0  1.0

data_LaPd2Se
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.89
_cell_length_b   4.89
_cell_length_c   11.98
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   LaPd2Se
_chemical_formula_sum   'La3 Pd6 Se3'
_cell_volume   248.46
_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
  La  La0  3  0.0  0.0  0.54  1.0
  Pd  Pd1  3  0.0  0.0  0.27  1.0
  Pd  Pd2  3  0.0  0.0  0.81  1.0
  Se  Se3  3  0.0  0.0  -0.0  1.0

La Pd Pd Se
La Pd Pd Se 0 2 o o o 0 2 o o + 0 2 o + o 0 2 + o o 0 3 o o + 0 3 o + o 0 3 + o o 0 1 - o o 0 1 o - o 0 1 o o - 0 1 o o o 1 3 o + + 1 3 + o + 1 3 + + o 1 3 + + + 1 2 o + + 1 2 + o + 1 2 + + o 2 3 o o o 
LaPd2Se is Heusler structured and crystallizes in the trigonal R3m space group. La(1) is bonded in a 11-coordinate geometry to four equivalent Pd(1), four equivalent Pd(2), and three equivalent Se(1) atoms. There are three shorter (2.92 Å) and one longer (3.24 Å) La(1)-Pd(1) bond length. There are three shorter (2.92 Å) and one longer (3.24 Å) La(1)-Pd(2) bond length. All La(1)-Se(1) bond lengths are 3.21 Å. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 7-coordinate geometry to four equivalent La(1) and three equivalent Se(1) atoms. All Pd(1)-Se(1) bond lengths are 2.92 Å. In the second Pd site, Pd(2) is bonded in a 5-coordinate geometry to four equivalent La(1) and one Se(1) atom. The Pd(2)-Se(1) bond length is 2.27 Å. Se(1) is bonded in a distorted single-bond geometry to three equivalent La(1), one Pd(2), and three equivalent Pd(1) atoms.