The material described by Dy2Sb2O7 crystallizes in the orthorhombic Imma space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 6-coordinate geometry to two equivalent O(3) and four equivalent O(1) atoms. In the second Dy site, Dy(2) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(3) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 15-60°. In the second Sb site, Sb(2) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form distorted corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles are 60°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Dy(1), one Dy(2), one Sb(1), and one Sb(2) atom to form distorted ODy2Sb2 tetrahedra that share corners with four equivalent O(3)Dy3Sb tetrahedra, corners with eight equivalent O(1)Dy2Sb2 tetrahedra, edges with two equivalent O(1)Dy2Sb2 tetrahedra, and edges with two equivalent O(3)Dy3Sb tetrahedra. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent Sb(1) atoms. In the third O site, O(3) is bonded to one Dy(1), two equivalent Dy(2), and one Sb(2) atom to form ODy3Sb tetrahedra that share corners with six equivalent O(3)Dy3Sb tetrahedra, corners with eight equivalent O(1)Dy2Sb2 tetrahedra,  an edgeedge with one O(3)Dy3Sb tetrahedra, and edges with four equivalent O(1)Dy2Sb2 tetrahedra. is represented by the CIF file [CIF]
data_Dy2Sb2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.545
_cell_length_b   7.545
_cell_length_c   7.545
_cell_angle_alpha   121.171
_cell_angle_beta   118.629
_cell_angle_gamma   90.187
_symmetry_Int_Tables_number   1
_cell_volume   303.971
_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
  Dy  Dy0  1  0.500  0.500  0.000  1.0
  Dy  Dy1  1  0.000  0.000  0.000  1.0
  Dy  Dy2  1  0.000  0.500  0.000  1.0
  Dy  Dy3  1  0.500  0.500  0.500  1.0
  Sb  Sb4  1  0.500  0.000  0.000  1.0
  Sb  Sb5  1  0.500  0.000  0.500  1.0
  Sb  Sb6  1  0.000  0.000  0.500  1.0
  Sb  Sb7  1  0.000  0.500  0.500  1.0
  O  O8  1  0.630  0.327  0.203  1.0
  O  O9  1  0.750  0.966  0.216  1.0
  O  O10  1  0.119  0.366  0.247  1.0
  O  O11  1  0.619  0.371  0.753  1.0
  O  O12  1  0.870  0.074  0.698  1.0
  O  O13  1  0.624  0.926  0.797  1.0
  O  O14  1  0.124  0.327  0.698  1.0
  O  O15  1  0.376  0.074  0.203  1.0
  O  O16  1  0.130  0.926  0.302  1.0
  O  O17  1  0.876  0.673  0.302  1.0
  O  O18  1  0.881  0.634  0.753  1.0
  O  O19  1  0.250  0.034  0.784  1.0
  O  O20  1  0.381  0.629  0.247  1.0
  O  O21  1  0.370  0.673  0.797  1.0
[/CIF]
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The material described by Dy2Sb2O7 crystallizes in the orthorhombic Imma space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 6-coordinate geometry to two equivalent O(3) and four equivalent O(1) atoms. In the second Dy site, Dy(2) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(3) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 15-60°. In the second Sb site, Sb(2) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form distorted corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles are 60°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Dy(1), one Dy(2), one Sb(1), and one Sb(2) atom to form distorted ODy2Sb2 tetrahedra that share corners with four equivalent O(3)Dy3Sb tetrahedra, corners with eight equivalent O(1)Dy2Sb2 tetrahedra, edges with two equivalent O(1)Dy2Sb2 tetrahedra, and edges with two equivalent O(3)Dy3Sb tetrahedra. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent Sb(1) atoms. In the third O site, O(3) is bonded to one Dy(1), two equivalent Dy(2), and one Sb(2) atom to form ODy3Sb tetrahedra that share corners with six equivalent O(3)Dy3Sb tetrahedra, corners with eight equivalent O(1)Dy2Sb2 tetrahedra,  an edgeedge with one O(3)Dy3Sb tetrahedra, and edges with four equivalent O(1)Dy2Sb2 tetrahedra. is represented by the CIF file [CIF]
data_Dy2Sb2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.545
_cell_length_b   7.545
_cell_length_c   7.545
_cell_angle_alpha   121.171
_cell_angle_beta   118.629
_cell_angle_gamma   90.187
_symmetry_Int_Tables_number   1
_cell_volume   303.971
_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
  Dy  Dy0  1  0.500  0.500  0.000  1.0
  Dy  Dy1  1  0.000  0.000  0.000  1.0
  Dy  Dy2  1  0.000  0.500  0.000  1.0
  Dy  Dy3  1  0.500  0.500  0.500  1.0
  Sb  Sb4  1  0.500  0.000  0.000  1.0
  Sb  Sb5  1  0.500  0.000  0.500  1.0
  Sb  Sb6  1  0.000  0.000  0.500  1.0
  Sb  Sb7  1  0.000  0.500  0.500  1.0
  O  O8  1  0.630  0.327  0.203  1.0
  O  O9  1  0.750  0.966  0.216  1.0
  O  O10  1  0.119  0.366  0.247  1.0
  O  O11  1  0.619  0.371  0.753  1.0
  O  O12  1  0.870  0.074  0.698  1.0
  O  O13  1  0.624  0.926  0.797  1.0
  O  O14  1  0.124  0.327  0.698  1.0
  O  O15  1  0.376  0.074  0.203  1.0
  O  O16  1  0.130  0.926  0.302  1.0
  O  O17  1  0.876  0.673  0.302  1.0
  O  O18  1  0.881  0.634  0.753  1.0
  O  O19  1  0.250  0.034  0.784  1.0
  O  O20  1  0.381  0.629  0.247  1.0
  O  O21  1  0.370  0.673  0.797  1.0
[/CIF]
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