data_CeGd3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.03
_cell_length_b   5.03
_cell_length_c   5.03
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CeGd3
_chemical_formula_sum   'Ce1 Gd3'
_cell_volume   127.23
_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
  Ce  Ce0  1  0.0  0.0  0.0  1.0
  Gd  Gd1  1  0.0  0.51  0.51  1.0
  Gd  Gd2  1  0.51  0.0  0.51  1.0
  Gd  Gd3  1  0.51  0.51  0.0  1.0

data_CeGd3
_symmetry_space_group_name_H-M   R3m
_cell_length_a   7.11
_cell_length_b   7.11
_cell_length_c   8.71
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   CeGd3
_chemical_formula_sum   'Ce3 Gd9'
_cell_volume   381.69
_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
  Ce  Ce0  3  0.0  0.0  0.0  1.0
  Gd  Gd1  9  0.17  0.34  0.34  1.0

Ce Gd Gd Gd
Gd3Ce is Uranium Silicide structured and crystallizes in the trigonal R3m space group. Gd(1) is bonded to eight equivalent Gd(1) and four equivalent Ce(1) atoms to form GdCe4Gd8 cuboctahedra that share corners with twelve equivalent Gd(1)Ce4Gd8 cuboctahedra, edges with eight equivalent Ce(1)Gd12 cuboctahedra, edges with sixteen equivalent Gd(1)Ce4Gd8 cuboctahedra, faces with four equivalent Ce(1)Gd12 cuboctahedra, and faces with fourteen equivalent Gd(1)Ce4Gd8 cuboctahedra. There are a spread of Gd(1)-Gd(1) bond distances ranging from 3.45-3.66 Å. There are a spread of Gd(1)-Ce(1) bond distances ranging from 3.45-3.66 Å. Ce(1) is bonded to twelve equivalent Gd(1) atoms to form CeGd12 cuboctahedra that share corners with twelve equivalent Ce(1)Gd12 cuboctahedra, edges with twenty-four equivalent Gd(1)Ce4Gd8 cuboctahedra, faces with six equivalent Ce(1)Gd12 cuboctahedra, and faces with twelve equivalent Gd(1)Ce4Gd8 cuboctahedra.