The compound described by Sm2MnSbO7 crystallizes in the orthorhombic Imma space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms to form distorted SmO8 hexagonal bipyramids that share edges with two equivalent Sm(1)O8 hexagonal bipyramids, edges with two equivalent Mn(1)O6 octahedra, and edges with four equivalent Sb(1)O6 octahedra. In the second Sm site, Sm(2) is bonded in a distorted body-centered cubic geometry to two equivalent O(1), two equivalent O(3), and four equivalent O(4) atoms. Mn(1) is bonded to two equivalent O(3) and four equivalent O(4) atoms to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent Sb(1)O6 octahedra, and edges with two equivalent Sm(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 49-52°. Sb(1) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, and edges with four equivalent Sm(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 45-52°. There are four inequivalent O sites. In the first O site, O(1) 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)Sm2Mn2 tetrahedra, corners with two equivalent O(2)Sm2Sb2 tetrahedra, corners with four equivalent O(1)Sm4 tetrahedra, corners with eight equivalent O(4)Sm2MnSb tetrahedra,  an edgeedge with one O(3)Sm2Mn2 tetrahedra,  an edgeedge with one O(2)Sm2Sb2 tetrahedra, and edges with four equivalent O(4)Sm2MnSb tetrahedra. In the second O site, O(2) is bonded to two equivalent Sm(1) and two equivalent Sb(1) atoms to form distorted OSm2Sb2 tetrahedra that share corners with two equivalent O(1)Sm4 tetrahedra, corners with four equivalent O(2)Sm2Sb2 tetrahedra, corners with eight equivalent O(4)Sm2MnSb tetrahedra,  an edgeedge with one O(1)Sm4 tetrahedra, and edges with four equivalent O(4)Sm2MnSb tetrahedra. In the third O site, O(3) is bonded to two equivalent Sm(2) and two equivalent Mn(1) atoms to form distorted OSm2Mn2 tetrahedra that share corners with two equivalent O(1)Sm4 tetrahedra, corners with four equivalent O(3)Sm2Mn2 tetrahedra, corners with eight equivalent O(4)Sm2MnSb tetrahedra,  an edgeedge with one O(1)Sm4 tetrahedra, and edges with four equivalent O(4)Sm2MnSb tetrahedra. In the fourth O site, O(4) is bonded to one Sm(1), one Sm(2), one Mn(1), and one Sb(1) atom to form distorted OSm2MnSb tetrahedra that share corners with two equivalent O(3)Sm2Mn2 tetrahedra, corners with two equivalent O(2)Sm2Sb2 tetrahedra, corners with two equivalent O(1)Sm4 tetrahedra, corners with eight equivalent O(4)Sm2MnSb tetrahedra,  an edgeedge with one O(3)Sm2Mn2 tetrahedra,  an edgeedge with one O(2)Sm2Sb2 tetrahedra,  an edgeedge with one O(1)Sm4 tetrahedra, and edges with two equivalent O(4)Sm2MnSb tetrahedra. is represented by the CIF file [CIF]
data_Sm2MnSbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.417
_cell_length_b   7.417
_cell_length_c   7.417
_cell_angle_alpha   121.560
_cell_angle_beta   118.617
_cell_angle_gamma   89.866
_symmetry_Int_Tables_number   1
_cell_volume   287.925
_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  0.000  0.000  1.0
  Sm  Sm2  1  0.500  0.500  0.000  1.0
  Sm  Sm3  1  0.000  0.500  0.500  1.0
  Mn  Mn4  1  0.000  0.000  0.500  1.0
  Mn  Mn5  1  0.000  0.500  0.000  1.0
  Sb  Sb6  1  0.000  0.000  0.000  1.0
  Sb  Sb7  1  0.500  0.000  0.500  1.0
  O  O8  1  0.372  0.622  0.750  1.0
  O  O9  1  0.628  0.378  0.250  1.0
  O  O10  1  0.326  0.076  0.250  1.0
  O  O11  1  0.921  0.671  0.250  1.0
  O  O12  1  0.341  0.671  0.261  1.0
  O  O13  1  0.909  0.079  0.239  1.0
  O  O14  1  0.341  0.079  0.670  1.0
  O  O15  1  0.909  0.671  0.830  1.0
  O  O16  1  0.674  0.924  0.750  1.0
  O  O17  1  0.079  0.329  0.750  1.0
  O  O18  1  0.659  0.329  0.739  1.0
  O  O19  1  0.091  0.921  0.761  1.0
  O  O20  1  0.659  0.921  0.330  1.0
  O  O21  1  0.091  0.329  0.170  1.0
[/CIF]
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The compound described by Sm2MnSbO7 crystallizes in the orthorhombic Imma space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms to form distorted SmO8 hexagonal bipyramids that share edges with two equivalent Sm(1)O8 hexagonal bipyramids, edges with two equivalent Mn(1)O6 octahedra, and edges with four equivalent Sb(1)O6 octahedra. In the second Sm site, Sm(2) is bonded in a distorted body-centered cubic geometry to two equivalent O(1), two equivalent O(3), and four equivalent O(4) atoms. Mn(1) is bonded to two equivalent O(3) and four equivalent O(4) atoms to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent Sb(1)O6 octahedra, and edges with two equivalent Sm(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 49-52°. Sb(1) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, and edges with four equivalent Sm(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 45-52°. There are four inequivalent O sites. In the first O site, O(1) 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)Sm2Mn2 tetrahedra, corners with two equivalent O(2)Sm2Sb2 tetrahedra, corners with four equivalent O(1)Sm4 tetrahedra, corners with eight equivalent O(4)Sm2MnSb tetrahedra,  an edgeedge with one O(3)Sm2Mn2 tetrahedra,  an edgeedge with one O(2)Sm2Sb2 tetrahedra, and edges with four equivalent O(4)Sm2MnSb tetrahedra. In the second O site, O(2) is bonded to two equivalent Sm(1) and two equivalent Sb(1) atoms to form distorted OSm2Sb2 tetrahedra that share corners with two equivalent O(1)Sm4 tetrahedra, corners with four equivalent O(2)Sm2Sb2 tetrahedra, corners with eight equivalent O(4)Sm2MnSb tetrahedra,  an edgeedge with one O(1)Sm4 tetrahedra, and edges with four equivalent O(4)Sm2MnSb tetrahedra. In the third O site, O(3) is bonded to two equivalent Sm(2) and two equivalent Mn(1) atoms to form distorted OSm2Mn2 tetrahedra that share corners with two equivalent O(1)Sm4 tetrahedra, corners with four equivalent O(3)Sm2Mn2 tetrahedra, corners with eight equivalent O(4)Sm2MnSb tetrahedra,  an edgeedge with one O(1)Sm4 tetrahedra, and edges with four equivalent O(4)Sm2MnSb tetrahedra. In the fourth O site, O(4) is bonded to one Sm(1), one Sm(2), one Mn(1), and one Sb(1) atom to form distorted OSm2MnSb tetrahedra that share corners with two equivalent O(3)Sm2Mn2 tetrahedra, corners with two equivalent O(2)Sm2Sb2 tetrahedra, corners with two equivalent O(1)Sm4 tetrahedra, corners with eight equivalent O(4)Sm2MnSb tetrahedra,  an edgeedge with one O(3)Sm2Mn2 tetrahedra,  an edgeedge with one O(2)Sm2Sb2 tetrahedra,  an edgeedge with one O(1)Sm4 tetrahedra, and edges with two equivalent O(4)Sm2MnSb tetrahedra. is represented by the CIF file [CIF]
data_Sm2MnSbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.417
_cell_length_b   7.417
_cell_length_c   7.417
_cell_angle_alpha   121.560
_cell_angle_beta   118.617
_cell_angle_gamma   89.866
_symmetry_Int_Tables_number   1
_cell_volume   287.925
_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  0.000  0.000  1.0
  Sm  Sm2  1  0.500  0.500  0.000  1.0
  Sm  Sm3  1  0.000  0.500  0.500  1.0
  Mn  Mn4  1  0.000  0.000  0.500  1.0
  Mn  Mn5  1  0.000  0.500  0.000  1.0
  Sb  Sb6  1  0.000  0.000  0.000  1.0
  Sb  Sb7  1  0.500  0.000  0.500  1.0
  O  O8  1  0.372  0.622  0.750  1.0
  O  O9  1  0.628  0.378  0.250  1.0
  O  O10  1  0.326  0.076  0.250  1.0
  O  O11  1  0.921  0.671  0.250  1.0
  O  O12  1  0.341  0.671  0.261  1.0
  O  O13  1  0.909  0.079  0.239  1.0
  O  O14  1  0.341  0.079  0.670  1.0
  O  O15  1  0.909  0.671  0.830  1.0
  O  O16  1  0.674  0.924  0.750  1.0
  O  O17  1  0.079  0.329  0.750  1.0
  O  O18  1  0.659  0.329  0.739  1.0
  O  O19  1  0.091  0.921  0.761  1.0
  O  O20  1  0.659  0.921  0.330  1.0
  O  O21  1  0.091  0.329  0.170  1.0
[/CIF]
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