The material structure described by Na2FeCd2(PO4)3 is Esseneite-derived structured and crystallizes in the monoclinic C2 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. In the second Na site, Na(2) is bonded to two equivalent O(12), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form distorted NaO8 hexagonal bipyramids that share corners with two equivalent P(3)O4 tetrahedra,  an edgeedge with one Cd(2)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Cd(1)O6 octahedra,  an edgeedge with one P(2)O4 tetrahedra, and edges with two equivalent P(4)O4 tetrahedra. In the third Na site, Na(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(7), and two equivalent O(8) atoms. Fe(1) is bonded to one O(1), one O(10), one O(11), one O(4), one O(6), and one O(9) atom to form FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  an edgeedge with one Na(2)O8 hexagonal bipyramid, and  an edgeedge with one Cd(1)O6 octahedra. There are three inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one O(10), one O(12), one O(2), one O(3), one O(5), and one O(9) atom to form distorted CdO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  an edgeedge with one Na(2)O8 hexagonal bipyramid,  an edgeedge with one Fe(1)O6 octahedra, and  an edgeedge with one Cd(2)O6 octahedra. In the second Cd site, Cd(2) is bonded to two equivalent O(12), two equivalent O(3), and two equivalent O(7) atoms to form distorted CdO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  an edgeedge with one Na(2)O8 hexagonal bipyramid, and edges with two equivalent Cd(1)O6 octahedra. In the third Cd site, Cd(3) is bonded in a 6-coordinate geometry to two equivalent O(11), two equivalent O(4), and two equivalent O(8) atoms. There are four inequivalent P sites. In the first P site, P(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form PO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Cd(1)O6 octahedra, and corners with two equivalent Cd(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-61°. In the second P site, P(2) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form PO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Cd(1)O6 octahedra, and  an edgeedge with one Na(2)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 47-54°. In the third P site, P(3) is bonded to one O(11), one O(5), one O(7), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O8 hexagonal bipyramid,  a cornercorner with one Cd(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and corners with two equivalent Cd(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 35-62°. In the fourth P site, P(4) is bonded to one O(10), one O(12), one O(6), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Cd(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Cd(1)O6 octahedra, and  an edgeedge with one Na(2)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 40-64°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(3), one Fe(1), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Na(3), one Cd(1), and one P(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(1), one Cd(1), one Cd(2), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(2), one Fe(1), one Cd(3), and one P(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Cd(1), and one P(3) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Fe(1), and one P(4) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to two equivalent Na(3), one Cd(2), and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Na(3), one Cd(3), and one P(4) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Fe(1), one Cd(1), and one P(3) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Fe(1), one Cd(1), and one P(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Fe(1), one Cd(3), and one P(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Na(2), one Cd(1), one Cd(2), and one P(4) atom. is represented by the CIF file [CIF]
data_Na2Cd2Fe(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.976
_cell_length_b   8.976
_cell_length_c   6.700
_cell_angle_alpha   72.966
_cell_angle_beta   72.966
_cell_angle_gamma   92.150
_symmetry_Int_Tables_number   1
_cell_volume   489.041
_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  0.028  0.972  0.000  1.0
  Na  Na1  1  0.980  0.020  0.500  1.0
  Na  Na2  1  0.502  0.501  0.246  1.0
  Na  Na3  1  0.499  0.498  0.754  1.0
  Cd  Cd4  1  0.923  0.625  0.399  1.0
  Cd  Cd5  1  0.375  0.077  0.601  1.0
  Cd  Cd6  1  0.274  0.726  0.500  1.0
  Cd  Cd7  1  0.728  0.272  0.000  1.0
  Fe  Fe8  1  0.068  0.385  0.112  1.0
  Fe  Fe9  1  0.615  0.932  0.888  1.0
  P  P10  1  0.287  0.713  0.000  1.0
  P  P11  1  0.723  0.277  0.500  1.0
  P  P12  1  0.658  0.875  0.375  1.0
  P  P13  1  0.125  0.342  0.625  1.0
  P  P14  1  0.342  0.133  0.117  1.0
  P  P15  1  0.867  0.658  0.883  1.0
  O  O16  1  0.262  0.538  0.005  1.0
  O  O17  1  0.462  0.738  0.995  1.0
  O  O18  1  0.733  0.430  0.558  1.0
  O  O19  1  0.570  0.267  0.442  1.0
  O  O20  1  0.181  0.745  0.206  1.0
  O  O21  1  0.255  0.819  0.794  1.0
  O  O22  1  0.854  0.262  0.292  1.0
  O  O23  1  0.738  0.146  0.708  1.0
  O  O24  1  0.835  0.858  0.335  1.0
  O  O25  1  0.142  0.165  0.665  1.0
  O  O26  1  0.179  0.190  0.110  1.0
  O  O27  1  0.810  0.821  0.890  1.0
  O  O28  1  0.551  0.720  0.429  1.0
  O  O29  1  0.280  0.449  0.571  1.0
  O  O30  1  0.460  0.276  0.081  1.0
  O  O31  1  0.724  0.540  0.919  1.0
  O  O32  1  0.605  0.945  0.568  1.0
  O  O33  1  0.055  0.395  0.432  1.0
  O  O34  1  0.409  0.054  0.936  1.0
  O  O35  1  0.946  0.591  0.064  1.0
  O  O36  1  0.647  0.994  0.153  1.0
  O  O37  1  0.006  0.353  0.847  1.0
  O  O38  1  0.306  0.004  0.344  1.0
  O  O39  1  0.996  0.694  0.656  1.0
[/CIF]
.
The material structure described by Na2FeCd2(PO4)3 is Esseneite-derived structured and crystallizes in the monoclinic C2 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. In the second Na site, Na(2) is bonded to two equivalent O(12), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form distorted NaO8 hexagonal bipyramids that share corners with two equivalent P(3)O4 tetrahedra,  an edgeedge with one Cd(2)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Cd(1)O6 octahedra,  an edgeedge with one P(2)O4 tetrahedra, and edges with two equivalent P(4)O4 tetrahedra. In the third Na site, Na(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(7), and two equivalent O(8) atoms. Fe(1) is bonded to one O(1), one O(10), one O(11), one O(4), one O(6), and one O(9) atom to form FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  an edgeedge with one Na(2)O8 hexagonal bipyramid, and  an edgeedge with one Cd(1)O6 octahedra. There are three inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one O(10), one O(12), one O(2), one O(3), one O(5), and one O(9) atom to form distorted CdO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  an edgeedge with one Na(2)O8 hexagonal bipyramid,  an edgeedge with one Fe(1)O6 octahedra, and  an edgeedge with one Cd(2)O6 octahedra. In the second Cd site, Cd(2) is bonded to two equivalent O(12), two equivalent O(3), and two equivalent O(7) atoms to form distorted CdO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  an edgeedge with one Na(2)O8 hexagonal bipyramid, and edges with two equivalent Cd(1)O6 octahedra. In the third Cd site, Cd(3) is bonded in a 6-coordinate geometry to two equivalent O(11), two equivalent O(4), and two equivalent O(8) atoms. There are four inequivalent P sites. In the first P site, P(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form PO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Cd(1)O6 octahedra, and corners with two equivalent Cd(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-61°. In the second P site, P(2) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form PO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Cd(1)O6 octahedra, and  an edgeedge with one Na(2)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 47-54°. In the third P site, P(3) is bonded to one O(11), one O(5), one O(7), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O8 hexagonal bipyramid,  a cornercorner with one Cd(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and corners with two equivalent Cd(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 35-62°. In the fourth P site, P(4) is bonded to one O(10), one O(12), one O(6), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Cd(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Cd(1)O6 octahedra, and  an edgeedge with one Na(2)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 40-64°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(3), one Fe(1), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Na(3), one Cd(1), and one P(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(1), one Cd(1), one Cd(2), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(2), one Fe(1), one Cd(3), and one P(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Cd(1), and one P(3) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Fe(1), and one P(4) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to two equivalent Na(3), one Cd(2), and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Na(3), one Cd(3), and one P(4) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Fe(1), one Cd(1), and one P(3) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Fe(1), one Cd(1), and one P(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Fe(1), one Cd(3), and one P(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Na(2), one Cd(1), one Cd(2), and one P(4) atom. is represented by the CIF file [CIF]
data_Na2Cd2Fe(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.976
_cell_length_b   8.976
_cell_length_c   6.700
_cell_angle_alpha   72.966
_cell_angle_beta   72.966
_cell_angle_gamma   92.150
_symmetry_Int_Tables_number   1
_cell_volume   489.041
_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  0.028  0.972  0.000  1.0
  Na  Na1  1  0.980  0.020  0.500  1.0
  Na  Na2  1  0.502  0.501  0.246  1.0
  Na  Na3  1  0.499  0.498  0.754  1.0
  Cd  Cd4  1  0.923  0.625  0.399  1.0
  Cd  Cd5  1  0.375  0.077  0.601  1.0
  Cd  Cd6  1  0.274  0.726  0.500  1.0
  Cd  Cd7  1  0.728  0.272  0.000  1.0
  Fe  Fe8  1  0.068  0.385  0.112  1.0
  Fe  Fe9  1  0.615  0.932  0.888  1.0
  P  P10  1  0.287  0.713  0.000  1.0
  P  P11  1  0.723  0.277  0.500  1.0
  P  P12  1  0.658  0.875  0.375  1.0
  P  P13  1  0.125  0.342  0.625  1.0
  P  P14  1  0.342  0.133  0.117  1.0
  P  P15  1  0.867  0.658  0.883  1.0
  O  O16  1  0.262  0.538  0.005  1.0
  O  O17  1  0.462  0.738  0.995  1.0
  O  O18  1  0.733  0.430  0.558  1.0
  O  O19  1  0.570  0.267  0.442  1.0
  O  O20  1  0.181  0.745  0.206  1.0
  O  O21  1  0.255  0.819  0.794  1.0
  O  O22  1  0.854  0.262  0.292  1.0
  O  O23  1  0.738  0.146  0.708  1.0
  O  O24  1  0.835  0.858  0.335  1.0
  O  O25  1  0.142  0.165  0.665  1.0
  O  O26  1  0.179  0.190  0.110  1.0
  O  O27  1  0.810  0.821  0.890  1.0
  O  O28  1  0.551  0.720  0.429  1.0
  O  O29  1  0.280  0.449  0.571  1.0
  O  O30  1  0.460  0.276  0.081  1.0
  O  O31  1  0.724  0.540  0.919  1.0
  O  O32  1  0.605  0.945  0.568  1.0
  O  O33  1  0.055  0.395  0.432  1.0
  O  O34  1  0.409  0.054  0.936  1.0
  O  O35  1  0.946  0.591  0.064  1.0
  O  O36  1  0.647  0.994  0.153  1.0
  O  O37  1  0.006  0.353  0.847  1.0
  O  O38  1  0.306  0.004  0.344  1.0
  O  O39  1  0.996  0.694  0.656  1.0
[/CIF]
.