The compound described by MgLa2(FeO3)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. In the second La site, La(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. In the second Fe site, Fe(2) is bonded in a trigonal planar geometry to one O(4), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one La(1), one La(2), and one Fe(1) atom to form distorted OLa2MgFe trigonal pyramids that share  a cornercorner with one O(6)La2Fe2 trigonal pyramid, corners with two equivalent O(2)La2MgFe trigonal pyramids, corners with two equivalent O(3)La2MgFe trigonal pyramids, corners with three equivalent O(4)La2Fe2 trigonal pyramids, corners with three equivalent O(5)La2Fe2 trigonal pyramids,  an edgeedge with one O(6)La2Fe2 trigonal pyramid,  an edgeedge with one O(2)La2MgFe trigonal pyramid, and  an edgeedge with one O(3)La2MgFe trigonal pyramid. In the second O site, O(2) is bonded to one Mg(1), one La(1), one La(2), and one Fe(1) atom to form distorted OLa2MgFe trigonal pyramids that share  a cornercorner with one O(4)La2Fe2 trigonal pyramid, corners with two equivalent O(1)La2MgFe trigonal pyramids, corners with two equivalent O(3)La2MgFe trigonal pyramids, corners with three equivalent O(5)La2Fe2 trigonal pyramids, corners with three equivalent O(6)La2Fe2 trigonal pyramids,  an edgeedge with one O(4)La2Fe2 trigonal pyramid,  an edgeedge with one O(1)La2MgFe trigonal pyramid, and  an edgeedge with one O(3)La2MgFe trigonal pyramid. In the third O site, O(3) is bonded to one Mg(1), one La(1), one La(2), and one Fe(1) atom to form distorted OLa2MgFe trigonal pyramids that share  a cornercorner with one O(5)La2Fe2 trigonal pyramid, corners with two equivalent O(1)La2MgFe trigonal pyramids, corners with two equivalent O(2)La2MgFe trigonal pyramids, corners with three equivalent O(4)La2Fe2 trigonal pyramids, corners with three equivalent O(6)La2Fe2 trigonal pyramids,  an edgeedge with one O(5)La2Fe2 trigonal pyramid,  an edgeedge with one O(1)La2MgFe trigonal pyramid, and  an edgeedge with one O(2)La2MgFe trigonal pyramid. In the fourth O site, O(4) is bonded to one La(1), one La(2), one Fe(1), and one Fe(2) atom to form distorted OLa2Fe2 trigonal pyramids that share  a cornercorner with one O(2)La2MgFe trigonal pyramid, corners with two equivalent O(5)La2Fe2 trigonal pyramids, corners with two equivalent O(6)La2Fe2 trigonal pyramids, corners with three equivalent O(1)La2MgFe trigonal pyramids, corners with three equivalent O(3)La2MgFe trigonal pyramids,  an edgeedge with one O(5)La2Fe2 trigonal pyramid,  an edgeedge with one O(6)La2Fe2 trigonal pyramid, and  an edgeedge with one O(2)La2MgFe trigonal pyramid. In the fifth O site, O(5) is bonded to one La(1), one La(2), one Fe(1), and one Fe(2) atom to form distorted OLa2Fe2 trigonal pyramids that share  a cornercorner with one O(3)La2MgFe trigonal pyramid, corners with two equivalent O(4)La2Fe2 trigonal pyramids, corners with two equivalent O(6)La2Fe2 trigonal pyramids, corners with three equivalent O(1)La2MgFe trigonal pyramids, corners with three equivalent O(2)La2MgFe trigonal pyramids,  an edgeedge with one O(4)La2Fe2 trigonal pyramid,  an edgeedge with one O(6)La2Fe2 trigonal pyramid, and  an edgeedge with one O(3)La2MgFe trigonal pyramid. In the sixth O site, O(6) is bonded to one La(1), one La(2), one Fe(1), and one Fe(2) atom to form distorted OLa2Fe2 trigonal pyramids that share  a cornercorner with one O(1)La2MgFe trigonal pyramid, corners with two equivalent O(4)La2Fe2 trigonal pyramids, corners with two equivalent O(5)La2Fe2 trigonal pyramids, corners with three equivalent O(2)La2MgFe trigonal pyramids, corners with three equivalent O(3)La2MgFe trigonal pyramids,  an edgeedge with one O(4)La2Fe2 trigonal pyramid,  an edgeedge with one O(5)La2Fe2 trigonal pyramid, and  an edgeedge with one O(1)La2MgFe trigonal pyramid. is represented by the CIF card [CIF]
data_La2Mg(FeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.341
_cell_length_b   6.424
_cell_length_c   6.377
_cell_angle_alpha   54.948
_cell_angle_beta   55.288
_cell_angle_gamma   54.898
_symmetry_Int_Tables_number   1
_cell_volume   162.526
_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
  La  La0  1  0.316  0.317  0.315  1.0
  La  La1  1  0.712  0.710  0.713  1.0
  Mg  Mg2  1  0.100  0.094  0.097  1.0
  Fe  Fe3  1  0.511  0.510  0.510  1.0
  Fe  Fe4  1  0.915  0.921  0.918  1.0
  O  O5  1  0.393  0.146  0.738  1.0
  O  O6  1  0.150  0.736  0.392  1.0
  O  O7  1  0.740  0.389  0.148  1.0
  O  O8  1  0.873  0.284  0.632  1.0
  O  O9  1  0.280  0.635  0.875  1.0
  O  O10  1  0.629  0.878  0.281  1.0
[/CIF]
.
The compound described by MgLa2(FeO3)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. In the second La site, La(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. In the second Fe site, Fe(2) is bonded in a trigonal planar geometry to one O(4), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one La(1), one La(2), and one Fe(1) atom to form distorted OLa2MgFe trigonal pyramids that share  a cornercorner with one O(6)La2Fe2 trigonal pyramid, corners with two equivalent O(2)La2MgFe trigonal pyramids, corners with two equivalent O(3)La2MgFe trigonal pyramids, corners with three equivalent O(4)La2Fe2 trigonal pyramids, corners with three equivalent O(5)La2Fe2 trigonal pyramids,  an edgeedge with one O(6)La2Fe2 trigonal pyramid,  an edgeedge with one O(2)La2MgFe trigonal pyramid, and  an edgeedge with one O(3)La2MgFe trigonal pyramid. In the second O site, O(2) is bonded to one Mg(1), one La(1), one La(2), and one Fe(1) atom to form distorted OLa2MgFe trigonal pyramids that share  a cornercorner with one O(4)La2Fe2 trigonal pyramid, corners with two equivalent O(1)La2MgFe trigonal pyramids, corners with two equivalent O(3)La2MgFe trigonal pyramids, corners with three equivalent O(5)La2Fe2 trigonal pyramids, corners with three equivalent O(6)La2Fe2 trigonal pyramids,  an edgeedge with one O(4)La2Fe2 trigonal pyramid,  an edgeedge with one O(1)La2MgFe trigonal pyramid, and  an edgeedge with one O(3)La2MgFe trigonal pyramid. In the third O site, O(3) is bonded to one Mg(1), one La(1), one La(2), and one Fe(1) atom to form distorted OLa2MgFe trigonal pyramids that share  a cornercorner with one O(5)La2Fe2 trigonal pyramid, corners with two equivalent O(1)La2MgFe trigonal pyramids, corners with two equivalent O(2)La2MgFe trigonal pyramids, corners with three equivalent O(4)La2Fe2 trigonal pyramids, corners with three equivalent O(6)La2Fe2 trigonal pyramids,  an edgeedge with one O(5)La2Fe2 trigonal pyramid,  an edgeedge with one O(1)La2MgFe trigonal pyramid, and  an edgeedge with one O(2)La2MgFe trigonal pyramid. In the fourth O site, O(4) is bonded to one La(1), one La(2), one Fe(1), and one Fe(2) atom to form distorted OLa2Fe2 trigonal pyramids that share  a cornercorner with one O(2)La2MgFe trigonal pyramid, corners with two equivalent O(5)La2Fe2 trigonal pyramids, corners with two equivalent O(6)La2Fe2 trigonal pyramids, corners with three equivalent O(1)La2MgFe trigonal pyramids, corners with three equivalent O(3)La2MgFe trigonal pyramids,  an edgeedge with one O(5)La2Fe2 trigonal pyramid,  an edgeedge with one O(6)La2Fe2 trigonal pyramid, and  an edgeedge with one O(2)La2MgFe trigonal pyramid. In the fifth O site, O(5) is bonded to one La(1), one La(2), one Fe(1), and one Fe(2) atom to form distorted OLa2Fe2 trigonal pyramids that share  a cornercorner with one O(3)La2MgFe trigonal pyramid, corners with two equivalent O(4)La2Fe2 trigonal pyramids, corners with two equivalent O(6)La2Fe2 trigonal pyramids, corners with three equivalent O(1)La2MgFe trigonal pyramids, corners with three equivalent O(2)La2MgFe trigonal pyramids,  an edgeedge with one O(4)La2Fe2 trigonal pyramid,  an edgeedge with one O(6)La2Fe2 trigonal pyramid, and  an edgeedge with one O(3)La2MgFe trigonal pyramid. In the sixth O site, O(6) is bonded to one La(1), one La(2), one Fe(1), and one Fe(2) atom to form distorted OLa2Fe2 trigonal pyramids that share  a cornercorner with one O(1)La2MgFe trigonal pyramid, corners with two equivalent O(4)La2Fe2 trigonal pyramids, corners with two equivalent O(5)La2Fe2 trigonal pyramids, corners with three equivalent O(2)La2MgFe trigonal pyramids, corners with three equivalent O(3)La2MgFe trigonal pyramids,  an edgeedge with one O(4)La2Fe2 trigonal pyramid,  an edgeedge with one O(5)La2Fe2 trigonal pyramid, and  an edgeedge with one O(1)La2MgFe trigonal pyramid. is represented by the CIF card [CIF]
data_La2Mg(FeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.341
_cell_length_b   6.424
_cell_length_c   6.377
_cell_angle_alpha   54.948
_cell_angle_beta   55.288
_cell_angle_gamma   54.898
_symmetry_Int_Tables_number   1
_cell_volume   162.526
_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
  La  La0  1  0.316  0.317  0.315  1.0
  La  La1  1  0.712  0.710  0.713  1.0
  Mg  Mg2  1  0.100  0.094  0.097  1.0
  Fe  Fe3  1  0.511  0.510  0.510  1.0
  Fe  Fe4  1  0.915  0.921  0.918  1.0
  O  O5  1  0.393  0.146  0.738  1.0
  O  O6  1  0.150  0.736  0.392  1.0
  O  O7  1  0.740  0.389  0.148  1.0
  O  O8  1  0.873  0.284  0.632  1.0
  O  O9  1  0.280  0.635  0.875  1.0
  O  O10  1  0.629  0.878  0.281  1.0
[/CIF]
.