The material structure described by Fe2Zn(SeO3)4 crystallizes in the monoclinic Pc space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(11), one O(2), one O(3), one O(6), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Zn(1)O5 trigonal bipyramid and  an edgeedge with one Zn(1)O5 trigonal bipyramid. In the second Fe site, Fe(2) is bonded to one O(10), one O(12), one O(4), one O(5), one O(7), and one O(9) atom to form FeO6 octahedra that share  an edgeedge with one Zn(1)O5 trigonal bipyramid. Zn(1) is bonded to one O(11), one O(2), one O(4), one O(5), and one O(8) atom to form distorted ZnO5 trigonal bipyramids that share  a cornercorner with one Fe(1)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, and  an edgeedge with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(5), and one O(6) atom. In the second Se site, Se(2) is bonded in a distorted trigonal non-coplanar geometry to one O(11), one O(2), and one O(9) atom. In the third Se site, Se(3) is bonded in a trigonal non-coplanar geometry to one O(12), one O(4), and one O(8) atom. In the fourth Se site, Se(4) is bonded in a distorted trigonal non-coplanar geometry to one O(10), one O(3), and one O(7) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Fe(1) and one Se(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Fe(1), one Zn(1), and one Se(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Fe(1) and one Se(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Fe(2), one Zn(1), and one Se(3) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Fe(2), one Zn(1), and one Se(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Fe(1) and one Se(1) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Fe(2) and one Se(4) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Fe(1), one Zn(1), and one Se(3) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Fe(2) and one Se(2) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Fe(2) and one Se(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Fe(1), one Zn(1), and one Se(2) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Fe(2) and one Se(3) atom. is represented by the CIF card [CIF]
data_ZnFe2(SeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.189
_cell_length_b   8.193
_cell_length_c   8.337
_cell_angle_alpha   87.760
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   558.851
_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
  Zn  Zn0  1  0.602  0.344  0.163  1.0
  Zn  Zn1  1  0.398  0.844  0.163  1.0
  Fe  Fe2  1  0.761  0.750  0.000  1.0
  Fe  Fe3  1  0.740  0.244  0.509  1.0
  Fe  Fe4  1  0.239  0.250  0.000  1.0
  Fe  Fe5  1  0.260  0.744  0.509  1.0
  Se  Se6  1  0.095  0.550  0.191  1.0
  Se  Se7  1  0.905  0.050  0.191  1.0
  Se  Se8  1  0.572  0.451  0.821  1.0
  Se  Se9  1  0.325  0.167  0.415  1.0
  Se  Se10  1  0.057  0.419  0.680  1.0
  Se  Se11  1  0.428  0.951  0.821  1.0
  Se  Se12  1  0.675  0.667  0.415  1.0
  Se  Se13  1  0.943  0.919  0.680  1.0
  O  O14  1  0.963  0.698  0.119  1.0
  O  O15  1  0.310  0.009  0.988  1.0
  O  O16  1  0.162  0.257  0.776  1.0
  O  O17  1  0.667  0.460  0.367  1.0
  O  O18  1  0.752  0.177  0.269  1.0
  O  O19  1  0.193  0.491  0.020  1.0
  O  O20  1  0.219  0.513  0.579  1.0
  O  O21  1  0.627  0.758  0.226  1.0
  O  O22  1  0.719  0.348  0.722  1.0
  O  O23  1  0.333  0.960  0.367  1.0
  O  O24  1  0.973  0.316  0.521  1.0
  O  O25  1  0.482  0.294  0.938  1.0
  O  O26  1  0.838  0.757  0.776  1.0
  O  O27  1  0.503  0.694  0.523  1.0
  O  O28  1  0.281  0.848  0.722  1.0
  O  O29  1  0.248  0.677  0.269  1.0
  O  O30  1  0.373  0.258  0.226  1.0
  O  O31  1  0.037  0.198  0.119  1.0
  O  O32  1  0.027  0.816  0.521  1.0
  O  O33  1  0.518  0.794  0.938  1.0
  O  O34  1  0.690  0.509  0.988  1.0
  O  O35  1  0.781  0.013  0.579  1.0
  O  O36  1  0.497  0.194  0.523  1.0
  O  O37  1  0.807  0.991  0.020  1.0
[/CIF]
.
The material structure described by Fe2Zn(SeO3)4 crystallizes in the monoclinic Pc space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(11), one O(2), one O(3), one O(6), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Zn(1)O5 trigonal bipyramid and  an edgeedge with one Zn(1)O5 trigonal bipyramid. In the second Fe site, Fe(2) is bonded to one O(10), one O(12), one O(4), one O(5), one O(7), and one O(9) atom to form FeO6 octahedra that share  an edgeedge with one Zn(1)O5 trigonal bipyramid. Zn(1) is bonded to one O(11), one O(2), one O(4), one O(5), and one O(8) atom to form distorted ZnO5 trigonal bipyramids that share  a cornercorner with one Fe(1)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, and  an edgeedge with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(5), and one O(6) atom. In the second Se site, Se(2) is bonded in a distorted trigonal non-coplanar geometry to one O(11), one O(2), and one O(9) atom. In the third Se site, Se(3) is bonded in a trigonal non-coplanar geometry to one O(12), one O(4), and one O(8) atom. In the fourth Se site, Se(4) is bonded in a distorted trigonal non-coplanar geometry to one O(10), one O(3), and one O(7) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Fe(1) and one Se(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Fe(1), one Zn(1), and one Se(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Fe(1) and one Se(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Fe(2), one Zn(1), and one Se(3) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Fe(2), one Zn(1), and one Se(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Fe(1) and one Se(1) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Fe(2) and one Se(4) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Fe(1), one Zn(1), and one Se(3) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Fe(2) and one Se(2) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Fe(2) and one Se(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Fe(1), one Zn(1), and one Se(2) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Fe(2) and one Se(3) atom. is represented by the CIF card [CIF]
data_ZnFe2(SeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.189
_cell_length_b   8.193
_cell_length_c   8.337
_cell_angle_alpha   87.760
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   558.851
_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
  Zn  Zn0  1  0.602  0.344  0.163  1.0
  Zn  Zn1  1  0.398  0.844  0.163  1.0
  Fe  Fe2  1  0.761  0.750  0.000  1.0
  Fe  Fe3  1  0.740  0.244  0.509  1.0
  Fe  Fe4  1  0.239  0.250  0.000  1.0
  Fe  Fe5  1  0.260  0.744  0.509  1.0
  Se  Se6  1  0.095  0.550  0.191  1.0
  Se  Se7  1  0.905  0.050  0.191  1.0
  Se  Se8  1  0.572  0.451  0.821  1.0
  Se  Se9  1  0.325  0.167  0.415  1.0
  Se  Se10  1  0.057  0.419  0.680  1.0
  Se  Se11  1  0.428  0.951  0.821  1.0
  Se  Se12  1  0.675  0.667  0.415  1.0
  Se  Se13  1  0.943  0.919  0.680  1.0
  O  O14  1  0.963  0.698  0.119  1.0
  O  O15  1  0.310  0.009  0.988  1.0
  O  O16  1  0.162  0.257  0.776  1.0
  O  O17  1  0.667  0.460  0.367  1.0
  O  O18  1  0.752  0.177  0.269  1.0
  O  O19  1  0.193  0.491  0.020  1.0
  O  O20  1  0.219  0.513  0.579  1.0
  O  O21  1  0.627  0.758  0.226  1.0
  O  O22  1  0.719  0.348  0.722  1.0
  O  O23  1  0.333  0.960  0.367  1.0
  O  O24  1  0.973  0.316  0.521  1.0
  O  O25  1  0.482  0.294  0.938  1.0
  O  O26  1  0.838  0.757  0.776  1.0
  O  O27  1  0.503  0.694  0.523  1.0
  O  O28  1  0.281  0.848  0.722  1.0
  O  O29  1  0.248  0.677  0.269  1.0
  O  O30  1  0.373  0.258  0.226  1.0
  O  O31  1  0.037  0.198  0.119  1.0
  O  O32  1  0.027  0.816  0.521  1.0
  O  O33  1  0.518  0.794  0.938  1.0
  O  O34  1  0.690  0.509  0.988  1.0
  O  O35  1  0.781  0.013  0.579  1.0
  O  O36  1  0.497  0.194  0.523  1.0
  O  O37  1  0.807  0.991  0.020  1.0
[/CIF]
.