The compound described by Y2Bi2O7 crystallizes in the monoclinic C2/m space group. Y(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. Bi(1) is bonded to one O(3), two equivalent O(1), and two equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing BiO5 trigonal bipyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Y(1) and one Bi(1) atom. In the second O site, O(2) is bonded to two equivalent Y(1) and two equivalent Bi(1) atoms to form edge-sharing OY2Bi2 trigonal pyramids. In the third O site, O(3) is bonded in a linear geometry to two equivalent Bi(1) atoms. is represented by the CIF file [CIF]
data_Y2Bi2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.055
_cell_length_b   6.055
_cell_length_c   5.881
_cell_angle_alpha   84.214
_cell_angle_beta   84.214
_cell_angle_gamma   106.126
_symmetry_Int_Tables_number   1
_cell_volume   204.210
_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
  Y  Y0  1  0.308  0.692  0.000  1.0
  Y  Y1  1  0.692  0.308  0.000  1.0
  Bi  Bi2  1  0.741  0.741  0.394  1.0
  Bi  Bi3  1  0.259  0.259  0.606  1.0
  O  O4  1  0.946  0.586  0.182  1.0
  O  O5  1  0.586  0.946  0.182  1.0
  O  O6  1  0.543  0.543  0.745  1.0
  O  O7  1  0.000  0.000  0.500  1.0
  O  O8  1  0.457  0.457  0.255  1.0
  O  O9  1  0.054  0.414  0.818  1.0
  O  O10  1  0.414  0.054  0.818  1.0
[/CIF]
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The compound described by Y2Bi2O7 crystallizes in the monoclinic C2/m space group. Y(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. Bi(1) is bonded to one O(3), two equivalent O(1), and two equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing BiO5 trigonal bipyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Y(1) and one Bi(1) atom. In the second O site, O(2) is bonded to two equivalent Y(1) and two equivalent Bi(1) atoms to form edge-sharing OY2Bi2 trigonal pyramids. In the third O site, O(3) is bonded in a linear geometry to two equivalent Bi(1) atoms. is represented by the CIF file [CIF]
data_Y2Bi2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.055
_cell_length_b   6.055
_cell_length_c   5.881
_cell_angle_alpha   84.214
_cell_angle_beta   84.214
_cell_angle_gamma   106.126
_symmetry_Int_Tables_number   1
_cell_volume   204.210
_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
  Y  Y0  1  0.308  0.692  0.000  1.0
  Y  Y1  1  0.692  0.308  0.000  1.0
  Bi  Bi2  1  0.741  0.741  0.394  1.0
  Bi  Bi3  1  0.259  0.259  0.606  1.0
  O  O4  1  0.946  0.586  0.182  1.0
  O  O5  1  0.586  0.946  0.182  1.0
  O  O6  1  0.543  0.543  0.745  1.0
  O  O7  1  0.000  0.000  0.500  1.0
  O  O8  1  0.457  0.457  0.255  1.0
  O  O9  1  0.054  0.414  0.818  1.0
  O  O10  1  0.414  0.054  0.818  1.0
[/CIF]
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