CaLa2Fe2(TeO6)2 crystallizes in the triclinic P1 space group. Ca(1) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(6) atom. 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 LaO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, and corners with three equivalent Te(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-60°. 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 LaO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, and corners with three equivalent Te(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-64°. 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 59-64°. In the second Fe site, Fe(2) is bonded in a trigonal planar geometry to one O(7), one O(8), and one O(9) atom. 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 46-52°. 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 and corners with three equivalent La(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-47°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted 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 distorted 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 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 T-shaped geometry to one Ca(1), one La(2), and one Te(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ca(1), one La(2), and one Te(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Ca(1), one La(2), and one Te(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one La(1), one Fe(2), and one Te(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one La(1), one Fe(2), and one Te(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one La(1), one Fe(2), and one Te(2) atom. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one Ca(1), one La(2), one Fe(1), and one Te(1) atom. In the eleventh O site, O(11) is bonded in a distorted see-saw-like geometry to one Ca(1), one La(2), one Fe(1), and one Te(1) atom. In the twelfth O site, O(12) is bonded in a distorted see-saw-like geometry to one Ca(1), one La(2), one Fe(1), and one Te(1) atom.
CaLa2Fe2(TeO6)2 crystallizes in the triclinic P1 space group. Ca(1) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(6) atom. The Ca(1)-O(10) bond length is 2.55 Å. The Ca(1)-O(11) bond length is 2.49 Å. The Ca(1)-O(12) bond length is 2.52 Å. The Ca(1)-O(4) bond length is 2.25 Å. The Ca(1)-O(5) bond length is 2.25 Å. The Ca(1)-O(6) bond length is 2.25 Å. 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 LaO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, and corners with three equivalent Te(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-60°. The La(1)-O(1) bond length is 2.41 Å. The La(1)-O(2) bond length is 2.42 Å. The La(1)-O(3) bond length is 2.45 Å. The La(1)-O(7) bond length is 2.49 Å. The La(1)-O(8) bond length is 2.49 Å. The La(1)-O(9) bond length is 2.50 Å. 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 LaO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, and corners with three equivalent Te(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-64°. The La(2)-O(10) bond length is 2.44 Å. The La(2)-O(11) bond length is 2.42 Å. The La(2)-O(12) bond length is 2.42 Å. The La(2)-O(4) bond length is 2.43 Å. The La(2)-O(5) bond length is 2.43 Å. The La(2)-O(6) bond length is 2.43 Å. 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 59-64°. The Fe(1)-O(1) bond length is 2.22 Å. The Fe(1)-O(10) bond length is 2.18 Å. The Fe(1)-O(11) bond length is 2.28 Å. The Fe(1)-O(12) bond length is 2.22 Å. The Fe(1)-O(2) bond length is 2.31 Å. The Fe(1)-O(3) bond length is 2.18 Å. In the second Fe site, Fe(2) is bonded in a trigonal planar geometry to one O(7), one O(8), and one O(9) atom. The Fe(2)-O(7) bond length is 1.95 Å. The Fe(2)-O(8) bond length is 1.94 Å. The Fe(2)-O(9) bond length is 1.95 Å. 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 46-52°. The Te(1)-O(1) bond length is 1.94 Å. The Te(1)-O(10) bond length is 1.99 Å. The Te(1)-O(11) bond length is 1.97 Å. The Te(1)-O(12) bond length is 1.98 Å. The Te(1)-O(2) bond length is 1.93 Å. The Te(1)-O(3) bond length is 1.95 Å. 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 and corners with three equivalent La(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-47°. The Te(2)-O(4) bond length is 1.94 Å. The Te(2)-O(5) bond length is 1.94 Å. The Te(2)-O(6) bond length is 1.94 Å. The Te(2)-O(7) bond length is 1.99 Å. The Te(2)-O(8) bond length is 1.99 Å. The Te(2)-O(9) bond length is 1.99 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted 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 distorted 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 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 T-shaped geometry to one Ca(1), one La(2), and one Te(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ca(1), one La(2), and one Te(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Ca(1), one La(2), and one Te(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one La(1), one Fe(2), and one Te(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one La(1), one Fe(2), and one Te(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one La(1), one Fe(2), and one Te(2) atom. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one Ca(1), one La(2), one Fe(1), and one Te(1) atom. In the eleventh O site, O(11) is bonded in a distorted see-saw-like geometry to one Ca(1), one La(2), one Fe(1), and one Te(1) atom. In the twelfth O site, O(12) is bonded in a distorted see-saw-like geometry to one Ca(1), one La(2), one Fe(1), and one Te(1) atom.