The crystal structure described by Na3Fe(PO4)(CO3) crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms. Fe(1) is bonded to one O(1), one O(2), one O(5), one O(6), and two equivalent O(4) atoms to form distorted FeO6 octahedra that share corners with four equivalent P(1)O4 tetrahedra. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. P(1) is bonded to one O(5), one O(6), and two equivalent O(4) atoms to form PO4 tetrahedra that share corners with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-56°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Na(2), two equivalent Na(1), one Fe(1), and one C(1) atom. In the second O site, O(2) is bonded to one Na(2), two equivalent Na(1), one Fe(1), and one C(1) atom to form distorted corner-sharing ONa3FeC trigonal bipyramids. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent Na(2), and one C(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Na(2), two equivalent Na(1), one Fe(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to two equivalent Na(1), one Fe(1), and one P(1) atom. In the sixth O site, O(6) is bonded to two equivalent Na(1), one Fe(1), and one P(1) atom to form distorted corner-sharing ONa2FeP tetrahedra. is represented by the CIF file [CIF]
data_Na3FePCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.681
_cell_length_b   5.218
_cell_length_c   9.087
_cell_angle_alpha   89.388
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   316.766
_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
  Na  Na0  1  0.496  0.251  0.262  1.0
  Na  Na1  1  0.996  0.749  0.738  1.0
  Na  Na2  1  0.504  0.749  0.738  1.0
  Na  Na3  1  0.004  0.251  0.262  1.0
  Na  Na4  1  0.750  0.234  0.917  1.0
  Na  Na5  1  0.250  0.766  0.083  1.0
  Fe  Fe6  1  0.250  0.218  0.646  1.0
  Fe  Fe7  1  0.750  0.782  0.354  1.0
  P  P8  1  0.750  0.298  0.584  1.0
  P  P9  1  0.250  0.702  0.416  1.0
  C  C10  1  0.250  0.272  0.938  1.0
  C  C11  1  0.750  0.728  0.062  1.0
  O  O12  1  0.250  0.047  0.876  1.0
  O  O13  1  0.750  0.953  0.124  1.0
  O  O14  1  0.250  0.477  0.854  1.0
  O  O15  1  0.750  0.523  0.146  1.0
  O  O16  1  0.250  0.290  0.080  1.0
  O  O17  1  0.750  0.710  0.920  1.0
  O  O18  1  0.936  0.218  0.678  1.0
  O  O19  1  0.436  0.782  0.322  1.0
  O  O20  1  0.064  0.782  0.322  1.0
  O  O21  1  0.564  0.218  0.678  1.0
  O  O22  1  0.750  0.169  0.432  1.0
  O  O23  1  0.250  0.831  0.568  1.0
  O  O24  1  0.250  0.405  0.438  1.0
  O  O25  1  0.750  0.595  0.562  1.0
[/CIF]
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The crystal structure described by Na3Fe(PO4)(CO3) crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms. Fe(1) is bonded to one O(1), one O(2), one O(5), one O(6), and two equivalent O(4) atoms to form distorted FeO6 octahedra that share corners with four equivalent P(1)O4 tetrahedra. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. P(1) is bonded to one O(5), one O(6), and two equivalent O(4) atoms to form PO4 tetrahedra that share corners with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-56°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Na(2), two equivalent Na(1), one Fe(1), and one C(1) atom. In the second O site, O(2) is bonded to one Na(2), two equivalent Na(1), one Fe(1), and one C(1) atom to form distorted corner-sharing ONa3FeC trigonal bipyramids. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent Na(2), and one C(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Na(2), two equivalent Na(1), one Fe(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to two equivalent Na(1), one Fe(1), and one P(1) atom. In the sixth O site, O(6) is bonded to two equivalent Na(1), one Fe(1), and one P(1) atom to form distorted corner-sharing ONa2FeP tetrahedra. is represented by the CIF file [CIF]
data_Na3FePCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.681
_cell_length_b   5.218
_cell_length_c   9.087
_cell_angle_alpha   89.388
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   316.766
_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
  Na  Na0  1  0.496  0.251  0.262  1.0
  Na  Na1  1  0.996  0.749  0.738  1.0
  Na  Na2  1  0.504  0.749  0.738  1.0
  Na  Na3  1  0.004  0.251  0.262  1.0
  Na  Na4  1  0.750  0.234  0.917  1.0
  Na  Na5  1  0.250  0.766  0.083  1.0
  Fe  Fe6  1  0.250  0.218  0.646  1.0
  Fe  Fe7  1  0.750  0.782  0.354  1.0
  P  P8  1  0.750  0.298  0.584  1.0
  P  P9  1  0.250  0.702  0.416  1.0
  C  C10  1  0.250  0.272  0.938  1.0
  C  C11  1  0.750  0.728  0.062  1.0
  O  O12  1  0.250  0.047  0.876  1.0
  O  O13  1  0.750  0.953  0.124  1.0
  O  O14  1  0.250  0.477  0.854  1.0
  O  O15  1  0.750  0.523  0.146  1.0
  O  O16  1  0.250  0.290  0.080  1.0
  O  O17  1  0.750  0.710  0.920  1.0
  O  O18  1  0.936  0.218  0.678  1.0
  O  O19  1  0.436  0.782  0.322  1.0
  O  O20  1  0.064  0.782  0.322  1.0
  O  O21  1  0.564  0.218  0.678  1.0
  O  O22  1  0.750  0.169  0.432  1.0
  O  O23  1  0.250  0.831  0.568  1.0
  O  O24  1  0.250  0.405  0.438  1.0
  O  O25  1  0.750  0.595  0.562  1.0
[/CIF]
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