The material described by MgCd2(FeO2)4 is Aluminum carbonitride-derived structured and crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form distorted MgO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra, corners with two equivalent Cd(2)O4 tetrahedra, and  an edgeedge with one Cd(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-61°. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(2), one O(4), one O(6), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent Cd(1)O4 tetrahedra, corners with three equivalent Cd(2)O4 tetrahedra, and edges with two equivalent Fe(4)O6 octahedra. In the second Fe site, Fe(2) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(5), one O(7), and one O(8) atom. In the third Fe site, Fe(3) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(5), one O(6), and one O(7) atom. In the fourth Fe site, Fe(4) is bonded to one O(2), one O(3), one O(4), 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 Cd(1)O4 tetrahedra, corners with three equivalent Cd(2)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one O(2), one O(3), one O(4), and one O(7) atom to form distorted CdO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-70°. In the second Cd site, Cd(2) is bonded to one O(1), one O(5), one O(6), and one O(8) atom to form CdO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra, and corners with two equivalent Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-67°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Fe(1), one Fe(2), one Fe(3), and one Cd(2) atom to form distorted OMgCdFe3 trigonal bipyramids that share corners with two equivalent O(3)CdFe3 tetrahedra, corners with three equivalent O(7)CdFe3 tetrahedra,  a cornercorner with one O(5)MgCdFe3 trigonal bipyramid,  a cornercorner with one O(6)CdFe3 trigonal pyramid,  a cornercorner with one O(8)CdFe3 trigonal pyramid,  an edgeedge with one O(6)CdFe3 trigonal pyramid,  an edgeedge with one O(8)CdFe3 trigonal pyramid, and  a faceface with one O(5)MgCdFe3 trigonal bipyramid. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Fe(1), one Fe(4), and one Cd(1) atom. In the third O site, O(3) is bonded to one Fe(2), one Fe(3), one Fe(4), and one Cd(1) atom to form OCdFe3 tetrahedra that share  a cornercorner with one O(7)CdFe3 tetrahedra, corners with two equivalent O(1)MgCdFe3 trigonal bipyramids, corners with three equivalent O(5)MgCdFe3 trigonal bipyramids, corners with two equivalent O(6)CdFe3 trigonal pyramids, corners with two equivalent O(8)CdFe3 trigonal pyramids, and  an edgeedge with one O(7)CdFe3 tetrahedra. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mg(1), one Fe(1), one Fe(4), and one Cd(1) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Fe(2), one Fe(3), one Fe(4), and one Cd(2) atom to form distorted OMgCdFe3 trigonal bipyramids that share corners with two equivalent O(7)CdFe3 tetrahedra, corners with three equivalent O(3)CdFe3 tetrahedra,  a cornercorner with one O(1)MgCdFe3 trigonal bipyramid,  a cornercorner with one O(6)CdFe3 trigonal pyramid,  a cornercorner with one O(8)CdFe3 trigonal pyramid,  an edgeedge with one O(6)CdFe3 trigonal pyramid,  an edgeedge with one O(8)CdFe3 trigonal pyramid, and  a faceface with one O(1)MgCdFe3 trigonal bipyramid. In the sixth O site, O(6) is bonded to one Fe(1), one Fe(3), one Fe(4), and one Cd(2) atom to form distorted OCdFe3 trigonal pyramids that share corners with two equivalent O(3)CdFe3 tetrahedra, corners with two equivalent O(7)CdFe3 tetrahedra,  a cornercorner with one O(1)MgCdFe3 trigonal bipyramid,  a cornercorner with one O(5)MgCdFe3 trigonal bipyramid,  a cornercorner with one O(8)CdFe3 trigonal pyramid,  an edgeedge with one O(1)MgCdFe3 trigonal bipyramid,  an edgeedge with one O(5)MgCdFe3 trigonal bipyramid, and  an edgeedge with one O(8)CdFe3 trigonal pyramid. In the seventh O site, O(7) is bonded to one Fe(1), one Fe(2), one Fe(3), and one Cd(1) atom to form OCdFe3 tetrahedra that share  a cornercorner with one O(3)CdFe3 tetrahedra, corners with two equivalent O(5)MgCdFe3 trigonal bipyramids, corners with three equivalent O(1)MgCdFe3 trigonal bipyramids, corners with two equivalent O(6)CdFe3 trigonal pyramids, corners with two equivalent O(8)CdFe3 trigonal pyramids, and  an edgeedge with one O(3)CdFe3 tetrahedra. In the eighth O site, O(8) is bonded to one Fe(1), one Fe(2), one Fe(4), and one Cd(2) atom to form distorted OCdFe3 trigonal pyramids that share corners with two equivalent O(3)CdFe3 tetrahedra, corners with two equivalent O(7)CdFe3 tetrahedra,  a cornercorner with one O(1)MgCdFe3 trigonal bipyramid,  a cornercorner with one O(5)MgCdFe3 trigonal bipyramid,  a cornercorner with one O(6)CdFe3 trigonal pyramid,  an edgeedge with one O(1)MgCdFe3 trigonal bipyramid,  an edgeedge with one O(5)MgCdFe3 trigonal bipyramid, and  an edgeedge with one O(6)CdFe3 trigonal pyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgCd2(FeO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.474
_cell_length_b   6.396
_cell_length_c   6.541
_cell_angle_alpha   59.895
_cell_angle_beta   56.579
_cell_angle_gamma   60.822
_symmetry_Int_Tables_number   1
_cell_volume   186.997
_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  0.894  0.347  0.897  1.0
  Cd  Cd1  1  0.191  0.061  0.190  1.0
  Cd  Cd2  1  0.848  0.899  0.848  1.0
  Fe  Fe3  1  0.504  0.005  0.500  1.0
  Fe  Fe4  1  0.986  0.545  0.422  1.0
  Fe  Fe5  1  0.420  0.553  0.986  1.0
  Fe  Fe6  1  0.502  0.489  0.505  1.0
  O  O7  1  0.725  0.729  0.727  1.0
  O  O8  1  0.281  0.230  0.748  1.0
  O  O9  1  0.291  0.666  0.292  1.0
  O  O10  1  0.749  0.236  0.282  1.0
  O  O11  1  0.726  0.314  0.724  1.0
  O  O12  1  0.280  0.752  0.706  1.0
  O  O13  1  0.292  0.256  0.289  1.0
  O  O14  1  0.708  0.761  0.279  1.0
[/CIF]
.
The material described by MgCd2(FeO2)4 is Aluminum carbonitride-derived structured and crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form distorted MgO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra, corners with two equivalent Cd(2)O4 tetrahedra, and  an edgeedge with one Cd(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-61°. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(2), one O(4), one O(6), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent Cd(1)O4 tetrahedra, corners with three equivalent Cd(2)O4 tetrahedra, and edges with two equivalent Fe(4)O6 octahedra. In the second Fe site, Fe(2) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(5), one O(7), and one O(8) atom. In the third Fe site, Fe(3) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(5), one O(6), and one O(7) atom. In the fourth Fe site, Fe(4) is bonded to one O(2), one O(3), one O(4), 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 Cd(1)O4 tetrahedra, corners with three equivalent Cd(2)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one O(2), one O(3), one O(4), and one O(7) atom to form distorted CdO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-70°. In the second Cd site, Cd(2) is bonded to one O(1), one O(5), one O(6), and one O(8) atom to form CdO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra, and corners with two equivalent Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-67°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Fe(1), one Fe(2), one Fe(3), and one Cd(2) atom to form distorted OMgCdFe3 trigonal bipyramids that share corners with two equivalent O(3)CdFe3 tetrahedra, corners with three equivalent O(7)CdFe3 tetrahedra,  a cornercorner with one O(5)MgCdFe3 trigonal bipyramid,  a cornercorner with one O(6)CdFe3 trigonal pyramid,  a cornercorner with one O(8)CdFe3 trigonal pyramid,  an edgeedge with one O(6)CdFe3 trigonal pyramid,  an edgeedge with one O(8)CdFe3 trigonal pyramid, and  a faceface with one O(5)MgCdFe3 trigonal bipyramid. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Fe(1), one Fe(4), and one Cd(1) atom. In the third O site, O(3) is bonded to one Fe(2), one Fe(3), one Fe(4), and one Cd(1) atom to form OCdFe3 tetrahedra that share  a cornercorner with one O(7)CdFe3 tetrahedra, corners with two equivalent O(1)MgCdFe3 trigonal bipyramids, corners with three equivalent O(5)MgCdFe3 trigonal bipyramids, corners with two equivalent O(6)CdFe3 trigonal pyramids, corners with two equivalent O(8)CdFe3 trigonal pyramids, and  an edgeedge with one O(7)CdFe3 tetrahedra. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mg(1), one Fe(1), one Fe(4), and one Cd(1) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Fe(2), one Fe(3), one Fe(4), and one Cd(2) atom to form distorted OMgCdFe3 trigonal bipyramids that share corners with two equivalent O(7)CdFe3 tetrahedra, corners with three equivalent O(3)CdFe3 tetrahedra,  a cornercorner with one O(1)MgCdFe3 trigonal bipyramid,  a cornercorner with one O(6)CdFe3 trigonal pyramid,  a cornercorner with one O(8)CdFe3 trigonal pyramid,  an edgeedge with one O(6)CdFe3 trigonal pyramid,  an edgeedge with one O(8)CdFe3 trigonal pyramid, and  a faceface with one O(1)MgCdFe3 trigonal bipyramid. In the sixth O site, O(6) is bonded to one Fe(1), one Fe(3), one Fe(4), and one Cd(2) atom to form distorted OCdFe3 trigonal pyramids that share corners with two equivalent O(3)CdFe3 tetrahedra, corners with two equivalent O(7)CdFe3 tetrahedra,  a cornercorner with one O(1)MgCdFe3 trigonal bipyramid,  a cornercorner with one O(5)MgCdFe3 trigonal bipyramid,  a cornercorner with one O(8)CdFe3 trigonal pyramid,  an edgeedge with one O(1)MgCdFe3 trigonal bipyramid,  an edgeedge with one O(5)MgCdFe3 trigonal bipyramid, and  an edgeedge with one O(8)CdFe3 trigonal pyramid. In the seventh O site, O(7) is bonded to one Fe(1), one Fe(2), one Fe(3), and one Cd(1) atom to form OCdFe3 tetrahedra that share  a cornercorner with one O(3)CdFe3 tetrahedra, corners with two equivalent O(5)MgCdFe3 trigonal bipyramids, corners with three equivalent O(1)MgCdFe3 trigonal bipyramids, corners with two equivalent O(6)CdFe3 trigonal pyramids, corners with two equivalent O(8)CdFe3 trigonal pyramids, and  an edgeedge with one O(3)CdFe3 tetrahedra. In the eighth O site, O(8) is bonded to one Fe(1), one Fe(2), one Fe(4), and one Cd(2) atom to form distorted OCdFe3 trigonal pyramids that share corners with two equivalent O(3)CdFe3 tetrahedra, corners with two equivalent O(7)CdFe3 tetrahedra,  a cornercorner with one O(1)MgCdFe3 trigonal bipyramid,  a cornercorner with one O(5)MgCdFe3 trigonal bipyramid,  a cornercorner with one O(6)CdFe3 trigonal pyramid,  an edgeedge with one O(1)MgCdFe3 trigonal bipyramid,  an edgeedge with one O(5)MgCdFe3 trigonal bipyramid, and  an edgeedge with one O(6)CdFe3 trigonal pyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgCd2(FeO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.474
_cell_length_b   6.396
_cell_length_c   6.541
_cell_angle_alpha   59.895
_cell_angle_beta   56.579
_cell_angle_gamma   60.822
_symmetry_Int_Tables_number   1
_cell_volume   186.997
_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  0.894  0.347  0.897  1.0
  Cd  Cd1  1  0.191  0.061  0.190  1.0
  Cd  Cd2  1  0.848  0.899  0.848  1.0
  Fe  Fe3  1  0.504  0.005  0.500  1.0
  Fe  Fe4  1  0.986  0.545  0.422  1.0
  Fe  Fe5  1  0.420  0.553  0.986  1.0
  Fe  Fe6  1  0.502  0.489  0.505  1.0
  O  O7  1  0.725  0.729  0.727  1.0
  O  O8  1  0.281  0.230  0.748  1.0
  O  O9  1  0.291  0.666  0.292  1.0
  O  O10  1  0.749  0.236  0.282  1.0
  O  O11  1  0.726  0.314  0.724  1.0
  O  O12  1  0.280  0.752  0.706  1.0
  O  O13  1  0.292  0.256  0.289  1.0
  O  O14  1  0.708  0.761  0.279  1.0
[/CIF]
.