The material described by Sm3SbO7 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a body-centered cubic geometry to two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. In the second Sm site, Sm(2) is bonded to one O(2), one O(3), one O(4), and four equivalent O(1) atoms to form distorted SmO7 pentagonal bipyramids that share corners with two equivalent Sb(1)O6 octahedra,  a cornercorner with one Sm(2)O7 pentagonal bipyramid, edges with two equivalent Sb(1)O6 octahedra, and edges with three equivalent Sm(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 46°. Sb(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with four equivalent Sm(2)O7 pentagonal bipyramids, and edges with four equivalent Sm(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 39°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Sm(1), two equivalent Sm(2), and one Sb(1) atom. In the second O site, O(2) is bonded to two equivalent Sm(2) and two equivalent Sb(1) atoms to form distorted OSm2Sb2 trigonal pyramids that share corners with two equivalent O(3)Sm4 tetrahedra, corners with two equivalent O(2)Sm2Sb2 trigonal pyramids, and  an edgeedge with one O(4)Sm4 tetrahedra. In the third O site, O(3) is bonded to two equivalent Sm(1) and two equivalent Sm(2) atoms to form OSm4 tetrahedra that share corners with two equivalent O(3)Sm4 tetrahedra, corners with four equivalent O(4)Sm4 tetrahedra, corners with two equivalent O(2)Sm2Sb2 trigonal pyramids, and  an edgeedge with one O(4)Sm4 tetrahedra. In the fourth O site, O(4) is bonded to two equivalent Sm(1) and two equivalent Sm(2) atoms to form OSm4 tetrahedra that share corners with two equivalent O(4)Sm4 tetrahedra, corners with four equivalent O(3)Sm4 tetrahedra,  an edgeedge with one O(3)Sm4 tetrahedra, and  an edgeedge with one O(2)Sm2Sb2 trigonal pyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm3SbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.567
_cell_length_b   6.567
_cell_length_c   7.614
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   109.640
_symmetry_Int_Tables_number   1
_cell_volume   309.263
_cell_formula_units_Z   2
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  0.500  1.0
  Sm  Sm1  1  0.500  0.500  0.000  1.0
  Sm  Sm2  1  0.532  1.000  0.750  1.0
  Sm  Sm3  1  1.000  0.532  0.250  1.0
  Sm  Sm4  1  0.468  0.000  0.250  1.0
  Sm  Sm5  1  0.000  0.468  0.750  1.0
  Sb  Sb6  1  0.000  0.000  0.500  1.0
  Sb  Sb7  1  0.000  0.000  0.000  1.0
  O  O8  1  0.685  0.930  0.471  1.0
  O  O9  1  0.930  0.685  0.529  1.0
  O  O10  1  0.685  0.930  0.029  1.0
  O  O11  1  0.930  0.685  0.971  1.0
  O  O12  1  0.315  0.070  0.529  1.0
  O  O13  1  0.070  0.315  0.471  1.0
  O  O14  1  0.315  0.070  0.971  1.0
  O  O15  1  0.070  0.315  0.029  1.0
  O  O16  1  0.936  0.064  0.750  1.0
  O  O17  1  0.064  0.936  0.250  1.0
  O  O18  1  0.370  0.630  0.750  1.0
  O  O19  1  0.630  0.370  0.250  1.0
  O  O20  1  0.635  0.365  0.750  1.0
  O  O21  1  0.365  0.635  0.250  1.0
[/CIF]
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The material described by Sm3SbO7 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a body-centered cubic geometry to two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. In the second Sm site, Sm(2) is bonded to one O(2), one O(3), one O(4), and four equivalent O(1) atoms to form distorted SmO7 pentagonal bipyramids that share corners with two equivalent Sb(1)O6 octahedra,  a cornercorner with one Sm(2)O7 pentagonal bipyramid, edges with two equivalent Sb(1)O6 octahedra, and edges with three equivalent Sm(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 46°. Sb(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with four equivalent Sm(2)O7 pentagonal bipyramids, and edges with four equivalent Sm(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 39°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Sm(1), two equivalent Sm(2), and one Sb(1) atom. In the second O site, O(2) is bonded to two equivalent Sm(2) and two equivalent Sb(1) atoms to form distorted OSm2Sb2 trigonal pyramids that share corners with two equivalent O(3)Sm4 tetrahedra, corners with two equivalent O(2)Sm2Sb2 trigonal pyramids, and  an edgeedge with one O(4)Sm4 tetrahedra. In the third O site, O(3) is bonded to two equivalent Sm(1) and two equivalent Sm(2) atoms to form OSm4 tetrahedra that share corners with two equivalent O(3)Sm4 tetrahedra, corners with four equivalent O(4)Sm4 tetrahedra, corners with two equivalent O(2)Sm2Sb2 trigonal pyramids, and  an edgeedge with one O(4)Sm4 tetrahedra. In the fourth O site, O(4) is bonded to two equivalent Sm(1) and two equivalent Sm(2) atoms to form OSm4 tetrahedra that share corners with two equivalent O(4)Sm4 tetrahedra, corners with four equivalent O(3)Sm4 tetrahedra,  an edgeedge with one O(3)Sm4 tetrahedra, and  an edgeedge with one O(2)Sm2Sb2 trigonal pyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm3SbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.567
_cell_length_b   6.567
_cell_length_c   7.614
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   109.640
_symmetry_Int_Tables_number   1
_cell_volume   309.263
_cell_formula_units_Z   2
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  0.500  1.0
  Sm  Sm1  1  0.500  0.500  0.000  1.0
  Sm  Sm2  1  0.532  1.000  0.750  1.0
  Sm  Sm3  1  1.000  0.532  0.250  1.0
  Sm  Sm4  1  0.468  0.000  0.250  1.0
  Sm  Sm5  1  0.000  0.468  0.750  1.0
  Sb  Sb6  1  0.000  0.000  0.500  1.0
  Sb  Sb7  1  0.000  0.000  0.000  1.0
  O  O8  1  0.685  0.930  0.471  1.0
  O  O9  1  0.930  0.685  0.529  1.0
  O  O10  1  0.685  0.930  0.029  1.0
  O  O11  1  0.930  0.685  0.971  1.0
  O  O12  1  0.315  0.070  0.529  1.0
  O  O13  1  0.070  0.315  0.471  1.0
  O  O14  1  0.315  0.070  0.971  1.0
  O  O15  1  0.070  0.315  0.029  1.0
  O  O16  1  0.936  0.064  0.750  1.0
  O  O17  1  0.064  0.936  0.250  1.0
  O  O18  1  0.370  0.630  0.750  1.0
  O  O19  1  0.630  0.370  0.250  1.0
  O  O20  1  0.635  0.365  0.750  1.0
  O  O21  1  0.365  0.635  0.250  1.0
[/CIF]
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