The structure described by Na2Er(MoO4)(PO4) is Esseneite-derived structured and crystallizes in the orthorhombic Ibca space group. Na(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. Er(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms. Mo(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(4) atoms. P(1) is bonded in a tetrahedral geometry to two equivalent O(2) and two equivalent O(3) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Na(1) and one Mo(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Na(1), one Er(1), and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Er(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Er(1) and one Mo(1) atom. is represented by the CIF card [CIF]
data_Na2ErMoPO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.477
_cell_length_b   11.477
_cell_length_c   11.477
_cell_angle_alpha   144.993
_cell_angle_beta   116.059
_cell_angle_gamma   75.026
_symmetry_Int_Tables_number   1
_cell_volume   763.960
_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
  Na  Na0  1  0.792  0.350  0.450  1.0
  Na  Na1  1  0.292  0.842  0.441  1.0
  Na  Na2  1  0.208  0.650  0.550  1.0
  Na  Na3  1  0.600  0.658  0.950  1.0
  Na  Na4  1  0.900  0.850  0.059  1.0
  Na  Na5  1  0.708  0.158  0.559  1.0
  Na  Na6  1  0.100  0.150  0.941  1.0
  Na  Na7  1  0.400  0.342  0.050  1.0
  Er  Er8  1  0.322  0.250  0.572  1.0
  Er  Er9  1  0.178  0.750  0.928  1.0
  Er  Er10  1  0.678  0.750  0.428  1.0
  Er  Er11  1  0.822  0.250  0.072  1.0
  Mo  Mo12  1  0.927  0.677  0.250  1.0
  Mo  Mo13  1  0.073  0.323  0.750  1.0
  Mo  Mo14  1  0.573  0.823  0.750  1.0
  Mo  Mo15  1  0.427  0.177  0.250  1.0
  P  P16  1  0.069  0.250  0.319  1.0
  P  P17  1  0.931  0.750  0.681  1.0
  P  P18  1  0.569  0.250  0.819  1.0
  P  P19  1  0.431  0.750  0.181  1.0
  O  O20  1  0.399  0.811  0.672  1.0
  O  O21  1  0.560  0.327  0.752  1.0
  O  O22  1  0.860  0.689  0.087  1.0
  O  O23  1  0.940  0.691  0.767  1.0
  O  O24  1  0.360  0.273  0.172  1.0
  O  O25  1  0.142  0.068  0.223  1.0
  O  O26  1  0.155  0.168  0.564  1.0
  O  O27  1  0.924  0.191  0.252  1.0
  O  O28  1  0.105  0.591  0.936  1.0
  O  O29  1  0.656  0.081  0.723  1.0
  O  O30  1  0.440  0.673  0.248  1.0
  O  O31  1  0.858  0.932  0.777  1.0
  O  O32  1  0.101  0.773  0.413  1.0
  O  O33  1  0.605  0.668  0.514  1.0
  O  O34  1  0.076  0.809  0.748  1.0
  O  O35  1  0.655  0.091  0.986  1.0
  O  O36  1  0.899  0.227  0.587  1.0
  O  O37  1  0.601  0.189  0.328  1.0
  O  O38  1  0.345  0.909  0.014  1.0
  O  O39  1  0.844  0.568  0.426  1.0
  O  O40  1  0.060  0.309  0.233  1.0
  O  O41  1  0.344  0.919  0.277  1.0
  O  O42  1  0.424  0.173  0.733  1.0
  O  O43  1  0.395  0.332  0.486  1.0
  O  O44  1  0.358  0.581  0.926  1.0
  O  O45  1  0.895  0.409  0.064  1.0
  O  O46  1  0.576  0.827  0.267  1.0
  O  O47  1  0.140  0.311  0.913  1.0
  O  O48  1  0.156  0.432  0.574  1.0
  O  O49  1  0.642  0.419  0.074  1.0
  O  O50  1  0.845  0.832  0.436  1.0
  O  O51  1  0.640  0.727  0.828  1.0
[/CIF]
.
The structure described by Na2Er(MoO4)(PO4) is Esseneite-derived structured and crystallizes in the orthorhombic Ibca space group. Na(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. Er(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms. Mo(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(4) atoms. P(1) is bonded in a tetrahedral geometry to two equivalent O(2) and two equivalent O(3) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Na(1) and one Mo(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Na(1), one Er(1), and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Er(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Er(1) and one Mo(1) atom. is represented by the CIF card [CIF]
data_Na2ErMoPO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.477
_cell_length_b   11.477
_cell_length_c   11.477
_cell_angle_alpha   144.993
_cell_angle_beta   116.059
_cell_angle_gamma   75.026
_symmetry_Int_Tables_number   1
_cell_volume   763.960
_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
  Na  Na0  1  0.792  0.350  0.450  1.0
  Na  Na1  1  0.292  0.842  0.441  1.0
  Na  Na2  1  0.208  0.650  0.550  1.0
  Na  Na3  1  0.600  0.658  0.950  1.0
  Na  Na4  1  0.900  0.850  0.059  1.0
  Na  Na5  1  0.708  0.158  0.559  1.0
  Na  Na6  1  0.100  0.150  0.941  1.0
  Na  Na7  1  0.400  0.342  0.050  1.0
  Er  Er8  1  0.322  0.250  0.572  1.0
  Er  Er9  1  0.178  0.750  0.928  1.0
  Er  Er10  1  0.678  0.750  0.428  1.0
  Er  Er11  1  0.822  0.250  0.072  1.0
  Mo  Mo12  1  0.927  0.677  0.250  1.0
  Mo  Mo13  1  0.073  0.323  0.750  1.0
  Mo  Mo14  1  0.573  0.823  0.750  1.0
  Mo  Mo15  1  0.427  0.177  0.250  1.0
  P  P16  1  0.069  0.250  0.319  1.0
  P  P17  1  0.931  0.750  0.681  1.0
  P  P18  1  0.569  0.250  0.819  1.0
  P  P19  1  0.431  0.750  0.181  1.0
  O  O20  1  0.399  0.811  0.672  1.0
  O  O21  1  0.560  0.327  0.752  1.0
  O  O22  1  0.860  0.689  0.087  1.0
  O  O23  1  0.940  0.691  0.767  1.0
  O  O24  1  0.360  0.273  0.172  1.0
  O  O25  1  0.142  0.068  0.223  1.0
  O  O26  1  0.155  0.168  0.564  1.0
  O  O27  1  0.924  0.191  0.252  1.0
  O  O28  1  0.105  0.591  0.936  1.0
  O  O29  1  0.656  0.081  0.723  1.0
  O  O30  1  0.440  0.673  0.248  1.0
  O  O31  1  0.858  0.932  0.777  1.0
  O  O32  1  0.101  0.773  0.413  1.0
  O  O33  1  0.605  0.668  0.514  1.0
  O  O34  1  0.076  0.809  0.748  1.0
  O  O35  1  0.655  0.091  0.986  1.0
  O  O36  1  0.899  0.227  0.587  1.0
  O  O37  1  0.601  0.189  0.328  1.0
  O  O38  1  0.345  0.909  0.014  1.0
  O  O39  1  0.844  0.568  0.426  1.0
  O  O40  1  0.060  0.309  0.233  1.0
  O  O41  1  0.344  0.919  0.277  1.0
  O  O42  1  0.424  0.173  0.733  1.0
  O  O43  1  0.395  0.332  0.486  1.0
  O  O44  1  0.358  0.581  0.926  1.0
  O  O45  1  0.895  0.409  0.064  1.0
  O  O46  1  0.576  0.827  0.267  1.0
  O  O47  1  0.140  0.311  0.913  1.0
  O  O48  1  0.156  0.432  0.574  1.0
  O  O49  1  0.642  0.419  0.074  1.0
  O  O50  1  0.845  0.832  0.436  1.0
  O  O51  1  0.640  0.727  0.828  1.0
[/CIF]
.