The compound described by MgZn2(FeO2)4 is Aluminum carbonitride-derived structured and crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(3), one O(4), and one O(8) atom to form distorted MgO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra, and  an edgeedge with one Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 35-62°. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(8) atom to form FeO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent Zn(1)O4 tetrahedra, corners with three equivalent Zn(2)O4 tetrahedra, and edges with two equivalent Fe(2)O6 octahedra. In the second Fe site, Fe(2) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form FeO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent Zn(1)O4 tetrahedra, corners with three equivalent Zn(2)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. In the third Fe site, Fe(3) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(5), one O(7), and one O(8) atom. In the fourth Fe site, Fe(4) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(6), one O(7), and one O(8) atom. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(4), one O(5), one O(6), and one O(8) atom to form ZnO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, and corners with two equivalent Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-65°. In the second Zn site, Zn(2) is bonded to one O(1), one O(2), one O(3), and one O(7) atom to form distorted ZnO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-69°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Fe(1), one Fe(3), one Fe(4), and one Zn(2) atom to form a mixture of corner and edge-sharing OZnFe3 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Fe(1), one Fe(2), and one Zn(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mg(1), one Fe(1), one Fe(2), and one Zn(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Mg(1), one Fe(2), one Fe(3), one Fe(4), and one Zn(1) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Fe(1), one Fe(2), one Fe(3), and one Zn(1) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Fe(1), one Fe(2), one Fe(4), and one Zn(1) atom. In the seventh O site, O(7) is bonded to one Fe(2), one Fe(3), one Fe(4), and one Zn(2) atom to form a mixture of corner and edge-sharing OZnFe3 tetrahedra. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Mg(1), one Fe(1), one Fe(3), one Fe(4), and one Zn(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgZn2(FeO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.250
_cell_length_b   6.123
_cell_length_c   6.011
_cell_angle_alpha   90.002
_cell_angle_beta   117.637
_cell_angle_gamma   119.372
_symmetry_Int_Tables_number   1
_cell_volume   169.680
_cell_formula_units_Z   1
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
  Mg  Mg0  1  0.304  0.653  0.910  1.0
  Zn  Zn1  1  0.192  0.097  0.846  1.0
  Zn  Zn2  1  0.879  0.939  0.196  1.0
  Fe  Fe3  1  0.503  0.997  0.498  1.0
  Fe  Fe4  1  0.502  0.505  0.496  1.0
  Fe  Fe5  1  0.890  0.445  0.985  1.0
  Fe  Fe6  1  0.926  0.463  0.439  1.0
  O  O7  1  0.061  0.749  0.281  1.0
  O  O8  1  0.546  0.773  0.760  1.0
  O  O9  1  0.555  0.778  0.290  1.0
  O  O10  1  0.967  0.702  0.730  1.0
  O  O11  1  0.465  0.233  0.704  1.0
  O  O12  1  0.473  0.236  0.253  1.0
  O  O13  1  0.061  0.312  0.279  1.0
  O  O14  1  0.967  0.266  0.729  1.0
[/CIF]
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The compound described by MgZn2(FeO2)4 is Aluminum carbonitride-derived structured and crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(3), one O(4), and one O(8) atom to form distorted MgO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra, and  an edgeedge with one Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 35-62°. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(8) atom to form FeO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent Zn(1)O4 tetrahedra, corners with three equivalent Zn(2)O4 tetrahedra, and edges with two equivalent Fe(2)O6 octahedra. In the second Fe site, Fe(2) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form FeO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent Zn(1)O4 tetrahedra, corners with three equivalent Zn(2)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. In the third Fe site, Fe(3) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(5), one O(7), and one O(8) atom. In the fourth Fe site, Fe(4) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(6), one O(7), and one O(8) atom. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(4), one O(5), one O(6), and one O(8) atom to form ZnO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, and corners with two equivalent Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-65°. In the second Zn site, Zn(2) is bonded to one O(1), one O(2), one O(3), and one O(7) atom to form distorted ZnO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-69°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Fe(1), one Fe(3), one Fe(4), and one Zn(2) atom to form a mixture of corner and edge-sharing OZnFe3 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Fe(1), one Fe(2), and one Zn(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mg(1), one Fe(1), one Fe(2), and one Zn(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Mg(1), one Fe(2), one Fe(3), one Fe(4), and one Zn(1) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Fe(1), one Fe(2), one Fe(3), and one Zn(1) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Fe(1), one Fe(2), one Fe(4), and one Zn(1) atom. In the seventh O site, O(7) is bonded to one Fe(2), one Fe(3), one Fe(4), and one Zn(2) atom to form a mixture of corner and edge-sharing OZnFe3 tetrahedra. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Mg(1), one Fe(1), one Fe(3), one Fe(4), and one Zn(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgZn2(FeO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.250
_cell_length_b   6.123
_cell_length_c   6.011
_cell_angle_alpha   90.002
_cell_angle_beta   117.637
_cell_angle_gamma   119.372
_symmetry_Int_Tables_number   1
_cell_volume   169.680
_cell_formula_units_Z   1
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
  Mg  Mg0  1  0.304  0.653  0.910  1.0
  Zn  Zn1  1  0.192  0.097  0.846  1.0
  Zn  Zn2  1  0.879  0.939  0.196  1.0
  Fe  Fe3  1  0.503  0.997  0.498  1.0
  Fe  Fe4  1  0.502  0.505  0.496  1.0
  Fe  Fe5  1  0.890  0.445  0.985  1.0
  Fe  Fe6  1  0.926  0.463  0.439  1.0
  O  O7  1  0.061  0.749  0.281  1.0
  O  O8  1  0.546  0.773  0.760  1.0
  O  O9  1  0.555  0.778  0.290  1.0
  O  O10  1  0.967  0.702  0.730  1.0
  O  O11  1  0.465  0.233  0.704  1.0
  O  O12  1  0.473  0.236  0.253  1.0
  O  O13  1  0.061  0.312  0.279  1.0
  O  O14  1  0.967  0.266  0.729  1.0
[/CIF]
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