The structure described by CaLa2Fe2(TeO6)2 crystallizes in the triclinic P1 space group. Ca(1) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form CaO6 octahedra that share edges with three equivalent Fe(2)O6 octahedra, edges with three equivalent Te(2)O6 octahedra,  a faceface with one La(1)O6 octahedra, and  a faceface with one La(2)O6 octahedra. There are two inequivalent La sites. In the first La site, La(1) is bonded to one O(1), one O(2), one O(3), one O(7), one O(8), and one O(9) atom to form distorted LaO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, corners with three equivalent Te(2)O6 octahedra, and  a faceface with one Ca(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-59°. In the second La site, La(2) is bonded to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(6) atom to form distorted LaO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, corners with three equivalent Te(2)O6 octahedra, and  a faceface with one Ca(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-60°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), and one O(3) atom to form FeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, and edges with three equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-60°. In the second Fe site, Fe(2) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form FeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, edges with three equivalent Ca(1)O6 octahedra, and edges with three equivalent Te(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-55°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), and one O(3) atom to form TeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, and edges with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-50°. In the second Te site, Te(2) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form TeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, edges with three equivalent Ca(1)O6 octahedra, and edges with three equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-45°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one La(1), one Fe(1), and one Te(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one La(1), one Fe(1), and one Te(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one La(1), one Fe(1), and one Te(1) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one La(2), one Fe(2), and one Te(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one La(2), one Fe(2), and one Te(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal pyramidal geometry to one Ca(1), one La(2), one Fe(2), and one Te(2) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one La(1), one Fe(2), and one Te(2) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one La(1), one Fe(2), and one Te(2) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one La(1), one Fe(2), and one Te(2) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one La(2), one Fe(1), and one Te(1) atom. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one La(2), one Fe(1), and one Te(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one La(2), one Fe(1), and one Te(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CaLa2Fe2(TeO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.434
_cell_length_b   5.458
_cell_length_c   10.980
_cell_angle_alpha   90.053
_cell_angle_beta   89.971
_cell_angle_gamma   59.967
_symmetry_Int_Tables_number   1
_cell_volume   281.946
_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
  Ca  Ca0  1  0.999  0.998  0.250  1.0
  La  La1  1  1.000  1.000  0.539  1.0
  La  La2  1  0.000  0.999  0.961  1.0
  Fe  Fe3  1  0.338  0.327  0.750  1.0
  Fe  Fe4  1  0.665  0.664  0.250  1.0
  Te  Te5  1  0.667  0.667  0.750  1.0
  Te  Te6  1  0.333  0.333  0.250  1.0
  O  O7  1  0.977  0.377  0.651  1.0
  O  O8  1  0.653  0.970  0.649  1.0
  O  O9  1  0.377  0.657  0.648  1.0
  O  O10  1  0.626  0.034  0.145  1.0
  O  O11  1  0.341  0.626  0.147  1.0
  O  O12  1  0.025  0.347  0.148  1.0
  O  O13  1  0.034  0.626  0.354  1.0
  O  O14  1  0.346  0.027  0.352  1.0
  O  O15  1  0.627  0.342  0.353  1.0
  O  O16  1  0.377  0.971  0.851  1.0
  O  O17  1  0.647  0.378  0.849  1.0
  O  O18  1  0.967  0.657  0.852  1.0
[/CIF]
.
The structure described by CaLa2Fe2(TeO6)2 crystallizes in the triclinic P1 space group. Ca(1) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form CaO6 octahedra that share edges with three equivalent Fe(2)O6 octahedra, edges with three equivalent Te(2)O6 octahedra,  a faceface with one La(1)O6 octahedra, and  a faceface with one La(2)O6 octahedra. There are two inequivalent La sites. In the first La site, La(1) is bonded to one O(1), one O(2), one O(3), one O(7), one O(8), and one O(9) atom to form distorted LaO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, corners with three equivalent Te(2)O6 octahedra, and  a faceface with one Ca(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-59°. In the second La site, La(2) is bonded to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(6) atom to form distorted LaO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, corners with three equivalent Te(2)O6 octahedra, and  a faceface with one Ca(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-60°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), and one O(3) atom to form FeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, and edges with three equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-60°. In the second Fe site, Fe(2) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form FeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, edges with three equivalent Ca(1)O6 octahedra, and edges with three equivalent Te(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-55°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to one O(1), one O(10), one O(11), one O(12), one O(2), and one O(3) atom to form TeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, and edges with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-50°. In the second Te site, Te(2) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form TeO6 octahedra that share corners with three equivalent La(1)O6 octahedra, corners with three equivalent La(2)O6 octahedra, edges with three equivalent Ca(1)O6 octahedra, and edges with three equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-45°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one La(1), one Fe(1), and one Te(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one La(1), one Fe(1), and one Te(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one La(1), one Fe(1), and one Te(1) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one La(2), one Fe(2), and one Te(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one La(2), one Fe(2), and one Te(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal pyramidal geometry to one Ca(1), one La(2), one Fe(2), and one Te(2) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one La(1), one Fe(2), and one Te(2) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one La(1), one Fe(2), and one Te(2) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one La(1), one Fe(2), and one Te(2) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one La(2), one Fe(1), and one Te(1) atom. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one La(2), one Fe(1), and one Te(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one La(2), one Fe(1), and one Te(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CaLa2Fe2(TeO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.434
_cell_length_b   5.458
_cell_length_c   10.980
_cell_angle_alpha   90.053
_cell_angle_beta   89.971
_cell_angle_gamma   59.967
_symmetry_Int_Tables_number   1
_cell_volume   281.946
_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
  Ca  Ca0  1  0.999  0.998  0.250  1.0
  La  La1  1  1.000  1.000  0.539  1.0
  La  La2  1  0.000  0.999  0.961  1.0
  Fe  Fe3  1  0.338  0.327  0.750  1.0
  Fe  Fe4  1  0.665  0.664  0.250  1.0
  Te  Te5  1  0.667  0.667  0.750  1.0
  Te  Te6  1  0.333  0.333  0.250  1.0
  O  O7  1  0.977  0.377  0.651  1.0
  O  O8  1  0.653  0.970  0.649  1.0
  O  O9  1  0.377  0.657  0.648  1.0
  O  O10  1  0.626  0.034  0.145  1.0
  O  O11  1  0.341  0.626  0.147  1.0
  O  O12  1  0.025  0.347  0.148  1.0
  O  O13  1  0.034  0.626  0.354  1.0
  O  O14  1  0.346  0.027  0.352  1.0
  O  O15  1  0.627  0.342  0.353  1.0
  O  O16  1  0.377  0.971  0.851  1.0
  O  O17  1  0.647  0.378  0.849  1.0
  O  O18  1  0.967  0.657  0.852  1.0
[/CIF]
.