The structure described by ErSbO4 crystallizes in the monoclinic P2_1/c space group. Er(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), three equivalent O(3), and three equivalent O(4) atoms. Sb(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 42-49°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Er(1) and two equivalent Sb(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Er(1) and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded to three equivalent Er(1) and one Sb(1) atom to form a mixture of distorted corner and edge-sharing OEr3Sb tetrahedra. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to three equivalent Er(1) and one Sb(1) atom. is represented by the CIF file [CIF]
data_ErSbO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.293
_cell_length_b   7.433
_cell_length_c   7.543
_cell_angle_alpha   81.442
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   293.433
_cell_formula_units_Z   4
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
  Er  Er0  1  0.726  0.388  0.356  1.0
  Er  Er1  1  0.274  0.612  0.644  1.0
  Er  Er2  1  0.774  0.888  0.356  1.0
  Er  Er3  1  0.226  0.112  0.644  1.0
  Sb  Sb4  1  0.769  0.808  0.836  1.0
  Sb  Sb5  1  0.231  0.192  0.164  1.0
  Sb  Sb6  1  0.269  0.692  0.164  1.0
  Sb  Sb7  1  0.731  0.308  0.836  1.0
  O  O8  1  0.905  0.309  0.068  1.0
  O  O9  1  0.095  0.691  0.932  1.0
  O  O10  1  0.384  0.438  0.171  1.0
  O  O11  1  0.616  0.562  0.829  1.0
  O  O12  1  0.116  0.938  0.171  1.0
  O  O13  1  0.884  0.062  0.829  1.0
  O  O14  1  0.595  0.809  0.068  1.0
  O  O15  1  0.405  0.191  0.932  1.0
  O  O16  1  0.976  0.825  0.612  1.0
  O  O17  1  0.024  0.175  0.388  1.0
  O  O18  1  0.476  0.675  0.388  1.0
  O  O19  1  0.524  0.325  0.612  1.0
  O  O20  1  0.513  0.118  0.323  1.0
  O  O21  1  0.487  0.882  0.677  1.0
  O  O22  1  0.987  0.618  0.323  1.0
  O  O23  1  0.013  0.382  0.677  1.0
[/CIF]
.
The structure described by ErSbO4 crystallizes in the monoclinic P2_1/c space group. Er(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), three equivalent O(3), and three equivalent O(4) atoms. Sb(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 42-49°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Er(1) and two equivalent Sb(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Er(1) and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded to three equivalent Er(1) and one Sb(1) atom to form a mixture of distorted corner and edge-sharing OEr3Sb tetrahedra. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to three equivalent Er(1) and one Sb(1) atom. is represented by the CIF file [CIF]
data_ErSbO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.293
_cell_length_b   7.433
_cell_length_c   7.543
_cell_angle_alpha   81.442
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   293.433
_cell_formula_units_Z   4
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
  Er  Er0  1  0.726  0.388  0.356  1.0
  Er  Er1  1  0.274  0.612  0.644  1.0
  Er  Er2  1  0.774  0.888  0.356  1.0
  Er  Er3  1  0.226  0.112  0.644  1.0
  Sb  Sb4  1  0.769  0.808  0.836  1.0
  Sb  Sb5  1  0.231  0.192  0.164  1.0
  Sb  Sb6  1  0.269  0.692  0.164  1.0
  Sb  Sb7  1  0.731  0.308  0.836  1.0
  O  O8  1  0.905  0.309  0.068  1.0
  O  O9  1  0.095  0.691  0.932  1.0
  O  O10  1  0.384  0.438  0.171  1.0
  O  O11  1  0.616  0.562  0.829  1.0
  O  O12  1  0.116  0.938  0.171  1.0
  O  O13  1  0.884  0.062  0.829  1.0
  O  O14  1  0.595  0.809  0.068  1.0
  O  O15  1  0.405  0.191  0.932  1.0
  O  O16  1  0.976  0.825  0.612  1.0
  O  O17  1  0.024  0.175  0.388  1.0
  O  O18  1  0.476  0.675  0.388  1.0
  O  O19  1  0.524  0.325  0.612  1.0
  O  O20  1  0.513  0.118  0.323  1.0
  O  O21  1  0.487  0.882  0.677  1.0
  O  O22  1  0.987  0.618  0.323  1.0
  O  O23  1  0.013  0.382  0.677  1.0
[/CIF]
.