The structure described by Er(PO5)2 crystallizes in the orthorhombic Pnna space group. Er(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. P(1) is bonded to one O(2), one O(5), and two equivalent O(1) atoms to form edge-sharing PO4 tetrahedra. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted L-shaped geometry to one Er(1) and one O(3) atom. In the second O site, O(1) is bonded in an L-shaped geometry to two equivalent P(1) atoms. In the third O site, O(5) is bonded in a bent 150 degrees geometry to one Er(1) and one P(1) atom. In the fourth O site, O(2) is bonded in a linear geometry to one Er(1) and one P(1) atom. In the fifth O site, O(3) is bonded in a distorted L-shaped geometry to one Er(1) and one O(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er(PO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.737
_cell_length_b   10.359
_cell_length_c   12.639
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   882.041
_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  0.250  0.239  0.250  1.0
  Er  Er1  1  0.750  0.761  0.750  1.0
  Er  Er2  1  0.250  0.261  0.750  1.0
  Er  Er3  1  0.750  0.739  0.250  1.0
  P  P4  1  0.028  0.498  0.093  1.0
  P  P5  1  0.972  0.502  0.907  1.0
  P  P6  1  0.028  0.002  0.907  1.0
  P  P7  1  0.472  0.002  0.593  1.0
  P  P8  1  0.972  0.998  0.093  1.0
  P  P9  1  0.528  0.998  0.407  1.0
  P  P10  1  0.472  0.498  0.407  1.0
  P  P11  1  0.528  0.502  0.593  1.0
  O  O12  1  0.136  0.565  0.989  1.0
  O  O13  1  0.864  0.435  0.011  1.0
  O  O14  1  0.136  0.935  0.011  1.0
  O  O15  1  0.364  0.935  0.489  1.0
  O  O16  1  0.864  0.065  0.989  1.0
  O  O17  1  0.636  0.065  0.511  1.0
  O  O18  1  0.364  0.565  0.511  1.0
  O  O19  1  0.636  0.435  0.489  1.0
  O  O20  1  0.063  0.096  0.165  1.0
  O  O21  1  0.937  0.904  0.835  1.0
  O  O22  1  0.063  0.404  0.835  1.0
  O  O23  1  0.437  0.404  0.665  1.0
  O  O24  1  0.937  0.596  0.165  1.0
  O  O25  1  0.563  0.596  0.335  1.0
  O  O26  1  0.437  0.096  0.335  1.0
  O  O27  1  0.563  0.904  0.665  1.0
  O  O28  1  0.568  0.268  0.164  1.0
  O  O29  1  0.432  0.732  0.836  1.0
  O  O30  1  0.568  0.232  0.836  1.0
  O  O31  1  0.932  0.232  0.664  1.0
  O  O32  1  0.432  0.768  0.164  1.0
  O  O33  1  0.068  0.768  0.336  1.0
  O  O34  1  0.932  0.268  0.336  1.0
  O  O35  1  0.068  0.732  0.664  1.0
  O  O36  1  0.461  0.204  0.098  1.0
  O  O37  1  0.539  0.796  0.902  1.0
  O  O38  1  0.461  0.296  0.902  1.0
  O  O39  1  0.039  0.296  0.598  1.0
  O  O40  1  0.539  0.704  0.098  1.0
  O  O41  1  0.961  0.704  0.402  1.0
  O  O42  1  0.039  0.204  0.402  1.0
  O  O43  1  0.961  0.796  0.598  1.0
  O  O44  1  0.156  0.397  0.142  1.0
  O  O45  1  0.844  0.603  0.858  1.0
  O  O46  1  0.156  0.103  0.858  1.0
  O  O47  1  0.344  0.103  0.642  1.0
  O  O48  1  0.844  0.897  0.142  1.0
  O  O49  1  0.656  0.897  0.358  1.0
  O  O50  1  0.344  0.397  0.358  1.0
  O  O51  1  0.656  0.603  0.642  1.0
[/CIF]
.
The structure described by Er(PO5)2 crystallizes in the orthorhombic Pnna space group. Er(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. P(1) is bonded to one O(2), one O(5), and two equivalent O(1) atoms to form edge-sharing PO4 tetrahedra. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted L-shaped geometry to one Er(1) and one O(3) atom. In the second O site, O(1) is bonded in an L-shaped geometry to two equivalent P(1) atoms. In the third O site, O(5) is bonded in a bent 150 degrees geometry to one Er(1) and one P(1) atom. In the fourth O site, O(2) is bonded in a linear geometry to one Er(1) and one P(1) atom. In the fifth O site, O(3) is bonded in a distorted L-shaped geometry to one Er(1) and one O(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er(PO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.737
_cell_length_b   10.359
_cell_length_c   12.639
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   882.041
_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  0.250  0.239  0.250  1.0
  Er  Er1  1  0.750  0.761  0.750  1.0
  Er  Er2  1  0.250  0.261  0.750  1.0
  Er  Er3  1  0.750  0.739  0.250  1.0
  P  P4  1  0.028  0.498  0.093  1.0
  P  P5  1  0.972  0.502  0.907  1.0
  P  P6  1  0.028  0.002  0.907  1.0
  P  P7  1  0.472  0.002  0.593  1.0
  P  P8  1  0.972  0.998  0.093  1.0
  P  P9  1  0.528  0.998  0.407  1.0
  P  P10  1  0.472  0.498  0.407  1.0
  P  P11  1  0.528  0.502  0.593  1.0
  O  O12  1  0.136  0.565  0.989  1.0
  O  O13  1  0.864  0.435  0.011  1.0
  O  O14  1  0.136  0.935  0.011  1.0
  O  O15  1  0.364  0.935  0.489  1.0
  O  O16  1  0.864  0.065  0.989  1.0
  O  O17  1  0.636  0.065  0.511  1.0
  O  O18  1  0.364  0.565  0.511  1.0
  O  O19  1  0.636  0.435  0.489  1.0
  O  O20  1  0.063  0.096  0.165  1.0
  O  O21  1  0.937  0.904  0.835  1.0
  O  O22  1  0.063  0.404  0.835  1.0
  O  O23  1  0.437  0.404  0.665  1.0
  O  O24  1  0.937  0.596  0.165  1.0
  O  O25  1  0.563  0.596  0.335  1.0
  O  O26  1  0.437  0.096  0.335  1.0
  O  O27  1  0.563  0.904  0.665  1.0
  O  O28  1  0.568  0.268  0.164  1.0
  O  O29  1  0.432  0.732  0.836  1.0
  O  O30  1  0.568  0.232  0.836  1.0
  O  O31  1  0.932  0.232  0.664  1.0
  O  O32  1  0.432  0.768  0.164  1.0
  O  O33  1  0.068  0.768  0.336  1.0
  O  O34  1  0.932  0.268  0.336  1.0
  O  O35  1  0.068  0.732  0.664  1.0
  O  O36  1  0.461  0.204  0.098  1.0
  O  O37  1  0.539  0.796  0.902  1.0
  O  O38  1  0.461  0.296  0.902  1.0
  O  O39  1  0.039  0.296  0.598  1.0
  O  O40  1  0.539  0.704  0.098  1.0
  O  O41  1  0.961  0.704  0.402  1.0
  O  O42  1  0.039  0.204  0.402  1.0
  O  O43  1  0.961  0.796  0.598  1.0
  O  O44  1  0.156  0.397  0.142  1.0
  O  O45  1  0.844  0.603  0.858  1.0
  O  O46  1  0.156  0.103  0.858  1.0
  O  O47  1  0.344  0.103  0.642  1.0
  O  O48  1  0.844  0.897  0.142  1.0
  O  O49  1  0.656  0.897  0.358  1.0
  O  O50  1  0.344  0.397  0.358  1.0
  O  O51  1  0.656  0.603  0.642  1.0
[/CIF]
.