The compound described by YSn2BiO7 crystallizes in the orthorhombic Imma space group. Y(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(1), two equivalent O(3), and four equivalent O(4) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(3) and four equivalent O(4) atoms to form corner-sharing SnO6 octahedra. The corner-sharing octahedral tilt angles are 52°. In the second Sn site, Sn(2) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form corner-sharing SnO6 octahedra. The corner-sharing octahedral tilt angles range from 51-52°. Bi(1) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1) and two equivalent Bi(1) atoms to form OY2Bi2 tetrahedra that share corners with two equivalent O(2)Sn2Bi2 tetrahedra, corners with two equivalent O(3)Y2Sn2 tetrahedra, corners with four equivalent O(1)Y2Bi2 tetrahedra, corners with eight equivalent O(4)YSn2Bi tetrahedra,  an edgeedge with one O(2)Sn2Bi2 tetrahedra,  an edgeedge with one O(3)Y2Sn2 tetrahedra, and edges with four equivalent O(4)YSn2Bi tetrahedra. In the second O site, O(2) is bonded to two equivalent Sn(2) and two equivalent Bi(1) atoms to form distorted OSn2Bi2 tetrahedra that share corners with two equivalent O(1)Y2Bi2 tetrahedra, corners with four equivalent O(2)Sn2Bi2 tetrahedra, corners with eight equivalent O(4)YSn2Bi tetrahedra,  an edgeedge with one O(1)Y2Bi2 tetrahedra, and edges with four equivalent O(4)YSn2Bi tetrahedra. In the third O site, O(3) is bonded to two equivalent Y(1) and two equivalent Sn(1) atoms to form distorted OY2Sn2 tetrahedra that share corners with two equivalent O(1)Y2Bi2 tetrahedra, corners with four equivalent O(3)Y2Sn2 tetrahedra, corners with eight equivalent O(4)YSn2Bi tetrahedra,  an edgeedge with one O(1)Y2Bi2 tetrahedra, and edges with four equivalent O(4)YSn2Bi tetrahedra. In the fourth O site, O(4) is bonded to one Y(1), one Sn(1), one Sn(2), and one Bi(1) atom to form distorted OYSn2Bi tetrahedra that share corners with two equivalent O(2)Sn2Bi2 tetrahedra, corners with two equivalent O(1)Y2Bi2 tetrahedra, corners with two equivalent O(3)Y2Sn2 tetrahedra, corners with eight equivalent O(4)YSn2Bi tetrahedra,  an edgeedge with one O(2)Sn2Bi2 tetrahedra,  an edgeedge with one O(1)Y2Bi2 tetrahedra,  an edgeedge with one O(3)Y2Sn2 tetrahedra, and edges with two equivalent O(4)YSn2Bi tetrahedra. is represented by the CIF file [CIF]
data_YSn2BiO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.516
_cell_length_b   7.516
_cell_length_c   7.516
_cell_angle_alpha   120.290
_cell_angle_beta   119.840
_cell_angle_gamma   89.888
_symmetry_Int_Tables_number   1
_cell_volume   299.924
_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
  Y  Y0  1  0.000  0.500  0.500  1.0
  Y  Y1  1  0.500  0.500  0.000  1.0
  Sn  Sn2  1  0.500  0.000  0.000  1.0
  Sn  Sn3  1  0.500  0.500  0.500  1.0
  Sn  Sn4  1  0.500  0.000  0.500  1.0
  Sn  Sn5  1  0.000  0.000  0.000  1.0
  Bi  Bi6  1  0.000  0.500  0.000  1.0
  Bi  Bi7  1  0.000  0.000  0.500  1.0
  O  O8  1  0.866  0.616  0.250  1.0
  O  O9  1  0.134  0.384  0.750  1.0
  O  O10  1  0.834  0.084  0.750  1.0
  O  O11  1  0.413  0.663  0.750  1.0
  O  O12  1  0.836  0.664  0.745  1.0
  O  O13  1  0.419  0.091  0.755  1.0
  O  O14  1  0.836  0.091  0.172  1.0
  O  O15  1  0.419  0.664  0.328  1.0
  O  O16  1  0.166  0.916  0.250  1.0
  O  O17  1  0.587  0.337  0.250  1.0
  O  O18  1  0.164  0.336  0.255  1.0
  O  O19  1  0.581  0.909  0.245  1.0
  O  O20  1  0.164  0.909  0.828  1.0
  O  O21  1  0.581  0.336  0.672  1.0
[/CIF]
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The compound described by YSn2BiO7 crystallizes in the orthorhombic Imma space group. Y(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(1), two equivalent O(3), and four equivalent O(4) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(3) and four equivalent O(4) atoms to form corner-sharing SnO6 octahedra. The corner-sharing octahedral tilt angles are 52°. In the second Sn site, Sn(2) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form corner-sharing SnO6 octahedra. The corner-sharing octahedral tilt angles range from 51-52°. Bi(1) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1) and two equivalent Bi(1) atoms to form OY2Bi2 tetrahedra that share corners with two equivalent O(2)Sn2Bi2 tetrahedra, corners with two equivalent O(3)Y2Sn2 tetrahedra, corners with four equivalent O(1)Y2Bi2 tetrahedra, corners with eight equivalent O(4)YSn2Bi tetrahedra,  an edgeedge with one O(2)Sn2Bi2 tetrahedra,  an edgeedge with one O(3)Y2Sn2 tetrahedra, and edges with four equivalent O(4)YSn2Bi tetrahedra. In the second O site, O(2) is bonded to two equivalent Sn(2) and two equivalent Bi(1) atoms to form distorted OSn2Bi2 tetrahedra that share corners with two equivalent O(1)Y2Bi2 tetrahedra, corners with four equivalent O(2)Sn2Bi2 tetrahedra, corners with eight equivalent O(4)YSn2Bi tetrahedra,  an edgeedge with one O(1)Y2Bi2 tetrahedra, and edges with four equivalent O(4)YSn2Bi tetrahedra. In the third O site, O(3) is bonded to two equivalent Y(1) and two equivalent Sn(1) atoms to form distorted OY2Sn2 tetrahedra that share corners with two equivalent O(1)Y2Bi2 tetrahedra, corners with four equivalent O(3)Y2Sn2 tetrahedra, corners with eight equivalent O(4)YSn2Bi tetrahedra,  an edgeedge with one O(1)Y2Bi2 tetrahedra, and edges with four equivalent O(4)YSn2Bi tetrahedra. In the fourth O site, O(4) is bonded to one Y(1), one Sn(1), one Sn(2), and one Bi(1) atom to form distorted OYSn2Bi tetrahedra that share corners with two equivalent O(2)Sn2Bi2 tetrahedra, corners with two equivalent O(1)Y2Bi2 tetrahedra, corners with two equivalent O(3)Y2Sn2 tetrahedra, corners with eight equivalent O(4)YSn2Bi tetrahedra,  an edgeedge with one O(2)Sn2Bi2 tetrahedra,  an edgeedge with one O(1)Y2Bi2 tetrahedra,  an edgeedge with one O(3)Y2Sn2 tetrahedra, and edges with two equivalent O(4)YSn2Bi tetrahedra. is represented by the CIF file [CIF]
data_YSn2BiO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.516
_cell_length_b   7.516
_cell_length_c   7.516
_cell_angle_alpha   120.290
_cell_angle_beta   119.840
_cell_angle_gamma   89.888
_symmetry_Int_Tables_number   1
_cell_volume   299.924
_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
  Y  Y0  1  0.000  0.500  0.500  1.0
  Y  Y1  1  0.500  0.500  0.000  1.0
  Sn  Sn2  1  0.500  0.000  0.000  1.0
  Sn  Sn3  1  0.500  0.500  0.500  1.0
  Sn  Sn4  1  0.500  0.000  0.500  1.0
  Sn  Sn5  1  0.000  0.000  0.000  1.0
  Bi  Bi6  1  0.000  0.500  0.000  1.0
  Bi  Bi7  1  0.000  0.000  0.500  1.0
  O  O8  1  0.866  0.616  0.250  1.0
  O  O9  1  0.134  0.384  0.750  1.0
  O  O10  1  0.834  0.084  0.750  1.0
  O  O11  1  0.413  0.663  0.750  1.0
  O  O12  1  0.836  0.664  0.745  1.0
  O  O13  1  0.419  0.091  0.755  1.0
  O  O14  1  0.836  0.091  0.172  1.0
  O  O15  1  0.419  0.664  0.328  1.0
  O  O16  1  0.166  0.916  0.250  1.0
  O  O17  1  0.587  0.337  0.250  1.0
  O  O18  1  0.164  0.336  0.255  1.0
  O  O19  1  0.581  0.909  0.245  1.0
  O  O20  1  0.164  0.909  0.828  1.0
  O  O21  1  0.581  0.336  0.672  1.0
[/CIF]
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