data_Ce3Gd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.84
_cell_length_b   4.84
_cell_length_c   4.84
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ce3Gd
_chemical_formula_sum   'Ce3 Gd1'
_cell_volume   113.5
_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  0.42  0.42  1.0
  Ce  Ce1  1  0.42  0.0  0.42  1.0
  Ce  Ce2  1  0.42  0.42  0.0  1.0
  Gd  Gd3  1  0.0  0.0  0.0  1.0

data_Ce3Gd
_symmetry_space_group_name_H-M   R3m
_cell_length_a   6.85
_cell_length_b   6.85
_cell_length_c   8.39
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Ce3Gd
_chemical_formula_sum   'Ce9 Gd3'
_cell_volume   340.49
_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  9  0.05  0.53  0.95  1.0
  Gd  Gd1  3  0.0  0.0  0.0  1.0

Ce Ce Ce Gd
GdCe3 is Uranium Silicide structured and crystallizes in the trigonal R3m space group. Gd(1) is bonded to twelve equivalent Ce(1) atoms to form a mixture of distorted face and corner-sharing GdCe12 cuboctahedra. There are a spread of Gd(1)-Ce(1) bond distances ranging from 2.88-3.97 Å. Ce(1) is bonded in a 12-coordinate geometry to four equivalent Gd(1) and eight equivalent Ce(1) atoms. There are a spread of Ce(1)-Ce(1) bond distances ranging from 2.88-3.97 Å.