The crystal structure described by SmCe4O10 is Fluorite-derived structured and crystallizes in the tetragonal I4/m space group. Sm(1) is bonded in a body-centered cubic geometry to eight equivalent O(2) atoms. Ce(1) is bonded in a body-centered cubic geometry to two equivalent O(1) and six equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ce(1) atoms to form OCe4 tetrahedra that share corners with sixteen equivalent O(2)Ce3Sm tetrahedra, edges with two equivalent O(1)Ce4 tetrahedra, and edges with four equivalent O(2)Ce3Sm tetrahedra. In the second O site, O(2) is bonded to one Sm(1) and three equivalent Ce(1) atoms to form OCe3Sm tetrahedra that share corners with four equivalent O(1)Ce4 tetrahedra, corners with twelve equivalent O(2)Ce3Sm tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra, and edges with five equivalent O(2)Ce3Sm tetrahedra. is represented by the CIF file [CIF]
data_Ce4SmO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.715
_cell_length_b   6.715
_cell_length_c   6.715
_cell_angle_alpha   99.565
_cell_angle_beta   99.565
_cell_angle_gamma   131.887
_symmetry_Int_Tables_number   1
_cell_volume   205.792
_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  0.399  0.799  0.199  1.0
  Ce  Ce1  1  0.799  0.601  0.400  1.0
  Ce  Ce2  1  0.201  0.399  0.600  1.0
  Ce  Ce3  1  0.601  0.201  0.801  1.0
  Sm  Sm4  1  0.000  0.000  0.000  1.0
  O  O5  1  0.250  0.750  0.500  1.0
  O  O6  1  0.644  0.542  0.695  1.0
  O  O7  1  0.051  0.356  0.898  1.0
  O  O8  1  0.458  0.153  0.102  1.0
  O  O9  1  0.847  0.949  0.305  1.0
  O  O10  1  0.356  0.458  0.305  1.0
  O  O11  1  0.750  0.250  0.500  1.0
  O  O12  1  0.153  0.051  0.695  1.0
  O  O13  1  0.542  0.847  0.898  1.0
  O  O14  1  0.949  0.644  0.102  1.0
[/CIF]
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The crystal structure described by SmCe4O10 is Fluorite-derived structured and crystallizes in the tetragonal I4/m space group. Sm(1) is bonded in a body-centered cubic geometry to eight equivalent O(2) atoms. Ce(1) is bonded in a body-centered cubic geometry to two equivalent O(1) and six equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ce(1) atoms to form OCe4 tetrahedra that share corners with sixteen equivalent O(2)Ce3Sm tetrahedra, edges with two equivalent O(1)Ce4 tetrahedra, and edges with four equivalent O(2)Ce3Sm tetrahedra. In the second O site, O(2) is bonded to one Sm(1) and three equivalent Ce(1) atoms to form OCe3Sm tetrahedra that share corners with four equivalent O(1)Ce4 tetrahedra, corners with twelve equivalent O(2)Ce3Sm tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra, and edges with five equivalent O(2)Ce3Sm tetrahedra. is represented by the CIF file [CIF]
data_Ce4SmO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.715
_cell_length_b   6.715
_cell_length_c   6.715
_cell_angle_alpha   99.565
_cell_angle_beta   99.565
_cell_angle_gamma   131.887
_symmetry_Int_Tables_number   1
_cell_volume   205.792
_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  0.399  0.799  0.199  1.0
  Ce  Ce1  1  0.799  0.601  0.400  1.0
  Ce  Ce2  1  0.201  0.399  0.600  1.0
  Ce  Ce3  1  0.601  0.201  0.801  1.0
  Sm  Sm4  1  0.000  0.000  0.000  1.0
  O  O5  1  0.250  0.750  0.500  1.0
  O  O6  1  0.644  0.542  0.695  1.0
  O  O7  1  0.051  0.356  0.898  1.0
  O  O8  1  0.458  0.153  0.102  1.0
  O  O9  1  0.847  0.949  0.305  1.0
  O  O10  1  0.356  0.458  0.305  1.0
  O  O11  1  0.750  0.250  0.500  1.0
  O  O12  1  0.153  0.051  0.695  1.0
  O  O13  1  0.542  0.847  0.898  1.0
  O  O14  1  0.949  0.644  0.102  1.0
[/CIF]
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