The material structure described by Th4SmO10 is Fluorite-derived structured and crystallizes in the tetragonal I4/m space group. Th(1) is bonded in a body-centered cubic geometry to two equivalent O(2) and six equivalent O(1) atoms. Sm(1) is bonded in a body-centered cubic geometry to eight equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Th(1) and one Sm(1) atom to form OSmTh3 tetrahedra that share corners with four equivalent O(2)Th4 tetrahedra, corners with twelve equivalent O(1)SmTh3 tetrahedra,  an edgeedge with one O(2)Th4 tetrahedra, and edges with five equivalent O(1)SmTh3 tetrahedra. In the second O site, O(2) is bonded to four equivalent Th(1) atoms to form OTh4 tetrahedra that share corners with sixteen equivalent O(1)SmTh3 tetrahedra, edges with two equivalent O(2)Th4 tetrahedra, and edges with four equivalent O(1)SmTh3 tetrahedra. is represented by the CIF file [CIF]
data_SmTh4O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.871
_cell_length_b   6.871
_cell_length_c   6.871
_cell_angle_alpha   99.599
_cell_angle_beta   99.599
_cell_angle_gamma   131.797
_symmetry_Int_Tables_number   1
_cell_volume   220.757
_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
  Sm  Sm0  1  0.500  0.500  0.000  1.0
  Th  Th1  1  0.101  0.299  0.399  1.0
  Th  Th2  1  0.899  0.701  0.601  1.0
  Th  Th3  1  0.299  0.899  0.198  1.0
  Th  Th4  1  0.701  0.101  0.802  1.0
  O  O5  1  0.551  0.652  0.698  1.0
  O  O6  1  0.046  0.147  0.698  1.0
  O  O7  1  0.853  0.551  0.899  1.0
  O  O8  1  0.348  0.046  0.899  1.0
  O  O9  1  0.750  0.250  0.500  1.0
  O  O10  1  0.250  0.750  0.500  1.0
  O  O11  1  0.449  0.348  0.302  1.0
  O  O12  1  0.954  0.853  0.302  1.0
  O  O13  1  0.652  0.954  0.101  1.0
  O  O14  1  0.147  0.449  0.101  1.0
[/CIF]
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The material structure described by Th4SmO10 is Fluorite-derived structured and crystallizes in the tetragonal I4/m space group. Th(1) is bonded in a body-centered cubic geometry to two equivalent O(2) and six equivalent O(1) atoms. Sm(1) is bonded in a body-centered cubic geometry to eight equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Th(1) and one Sm(1) atom to form OSmTh3 tetrahedra that share corners with four equivalent O(2)Th4 tetrahedra, corners with twelve equivalent O(1)SmTh3 tetrahedra,  an edgeedge with one O(2)Th4 tetrahedra, and edges with five equivalent O(1)SmTh3 tetrahedra. In the second O site, O(2) is bonded to four equivalent Th(1) atoms to form OTh4 tetrahedra that share corners with sixteen equivalent O(1)SmTh3 tetrahedra, edges with two equivalent O(2)Th4 tetrahedra, and edges with four equivalent O(1)SmTh3 tetrahedra. is represented by the CIF file [CIF]
data_SmTh4O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.871
_cell_length_b   6.871
_cell_length_c   6.871
_cell_angle_alpha   99.599
_cell_angle_beta   99.599
_cell_angle_gamma   131.797
_symmetry_Int_Tables_number   1
_cell_volume   220.757
_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
  Sm  Sm0  1  0.500  0.500  0.000  1.0
  Th  Th1  1  0.101  0.299  0.399  1.0
  Th  Th2  1  0.899  0.701  0.601  1.0
  Th  Th3  1  0.299  0.899  0.198  1.0
  Th  Th4  1  0.701  0.101  0.802  1.0
  O  O5  1  0.551  0.652  0.698  1.0
  O  O6  1  0.046  0.147  0.698  1.0
  O  O7  1  0.853  0.551  0.899  1.0
  O  O8  1  0.348  0.046  0.899  1.0
  O  O9  1  0.750  0.250  0.500  1.0
  O  O10  1  0.250  0.750  0.500  1.0
  O  O11  1  0.449  0.348  0.302  1.0
  O  O12  1  0.954  0.853  0.302  1.0
  O  O13  1  0.652  0.954  0.101  1.0
  O  O14  1  0.147  0.449  0.101  1.0
[/CIF]
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