Li7Nb2Fe3O16 is Spinel-derived structured and crystallizes in the triclinic P1 space group. There are seven inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(14), one O(2), one O(3), one O(4), one O(7), and one O(9) atom to form LiO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 55°. In the second Li site, Li(2) is bonded to one O(11), one O(12), one O(15), and one O(3) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Li(6)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, and corners with three equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-69°. In the third Li site, Li(3) is bonded to one O(14), one O(16), one O(5), and one O(9) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with three equivalent Nb(2)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(5)O6 octahedra, and  an edgeedge with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-68°. In the fourth Li site, Li(4) is bonded in a rectangular see-saw-like geometry to one O(1), one O(10), one O(4), and one O(6) atom. In the fifth Li site, Li(5) is bonded to one O(16), one O(2), one O(3), one O(4), one O(8), and one O(9) atom to form LiO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 54-55°. In the sixth Li site, Li(6) is bonded to one O(1), one O(11), one O(12), one O(13), one O(5), and one O(6) atom to form LiO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(7)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-51°. In the seventh Li site, Li(7) is bonded to one O(13), one O(2), one O(7), and one O(8) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(5)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and corners with three equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-66°. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(10), one O(2), one O(6), one O(7), and one O(8) atom to form distorted NbO6 octahedra that share corners with two equivalent Li(6)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, corners with three equivalent Li(7)O4 tetrahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(5)O6 octahedra, and  an edgeedge with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. In the second Nb site, Nb(2) is bonded to one O(11), one O(12), one O(14), one O(15), one O(16), and one O(9) atom to form distorted NbO6 octahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(5)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with three equivalent Li(2)O4 tetrahedra, corners with three equivalent Li(3)O4 tetrahedra,  an edgeedge with one Li(6)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra, and  an edgeedge with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-55°. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(14), one O(16), one O(3), one O(4), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the second Fe site, Fe(2) is bonded to one O(1), one O(10), one O(11), one O(13), one O(15), and one O(5) atom to form FeO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(7)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Li(6)O6 octahedra, and edges with two equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-53°. In the third Fe site, Fe(3) is bonded to one O(10), one O(12), one O(13), one O(15), one O(5), and one O(6) atom to form FeO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(7)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Li(6)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-55°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Li(4), one Li(6), one Nb(1), and one Fe(2) atom. In the second O site, O(2) is bonded to one Li(1), one Li(5), one Li(7), and one Nb(1) atom to form distorted OLi3Nb tetrahedra that share corners with two equivalent O(4)Li3Fe tetrahedra,  a cornercorner with one O(13)Li2Fe2 trigonal pyramid,  a cornercorner with one O(7)Li2NbFe trigonal pyramid,  a cornercorner with one O(8)Li2NbFe trigonal pyramid,  an edgeedge with one O(7)Li2NbFe trigonal pyramid, and  an edgeedge with one O(8)Li2NbFe trigonal pyramid. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(2), one Li(5), and one Fe(1) atom. In the fourth O site, O(4) is bonded to one Li(1), one Li(4), one Li(5), and one Fe(1) atom to form OLi3Fe tetrahedra that share corners with two equivalent O(2)Li3Nb tetrahedra, corners with two equivalent O(7)Li2NbFe trigonal pyramids, and corners with two equivalent O(8)Li2NbFe trigonal pyramids. In the fifth O site, O(5) is bonded to one Li(3), one Li(6), one Fe(2), and one Fe(3) atom to form OLi2Fe2 tetrahedra that share corners with two equivalent O(11)Li2NbFe tetrahedra, corners with two equivalent O(12)Li2NbFe tetrahedra, and corners with three equivalent O(13)Li2Fe2 trigonal pyramids. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Li(4), one Li(6), one Nb(1), and one Fe(3) atom. In the seventh O site, O(7) is bonded to one Li(1), one Li(7), one Nb(1), and one Fe(1) atom to form distorted OLi2NbFe trigonal pyramids that share  a cornercorner with one O(2)Li3Nb tetrahedra, corners with two equivalent O(4)Li3Fe tetrahedra,  a cornercorner with one O(13)Li2Fe2 trigonal pyramid,  a cornercorner with one O(8)Li2NbFe trigonal pyramid,  an edgeedge with one O(2)Li3Nb tetrahedra, and  an edgeedge with one O(8)Li2NbFe trigonal pyramid. In the eighth O site, O(8) is bonded to one Li(5), one Li(7), one Nb(1), and one Fe(1) atom to form distorted OLi2NbFe trigonal pyramids that share  a cornercorner with one O(2)Li3Nb tetrahedra, corners with two equivalent O(4)Li3Fe tetrahedra,  a cornercorner with one O(13)Li2Fe2 trigonal pyramid,  a cornercorner with one O(7)Li2NbFe trigonal pyramid,  an edgeedge with one O(2)Li3Nb tetrahedra, and  an edgeedge with one O(7)Li2NbFe trigonal pyramid. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(3), one Li(5), and one Nb(2) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Li(4), one Nb(1), one Fe(2), and one Fe(3) atom. In the eleventh O site, O(11) is bonded to one Li(2), one Li(6), one Nb(2), and one Fe(2) atom to form distorted OLi2NbFe tetrahedra that share  a cornercorner with one O(12)Li2NbFe tetrahedra, corners with two equivalent O(5)Li2Fe2 tetrahedra,  an edgeedge with one O(12)Li2NbFe tetrahedra, and  an edgeedge with one O(13)Li2Fe2 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Li(2), one Li(6), one Nb(2), and one Fe(3) atom to form distorted OLi2NbFe tetrahedra that share  a cornercorner with one O(11)Li2NbFe tetrahedra, corners with two equivalent O(5)Li2Fe2 tetrahedra,  an edgeedge with one O(11)Li2NbFe tetrahedra, and  an edgeedge with one O(13)Li2Fe2 trigonal pyramid. In the thirteenth O site, O(13) is bonded to one Li(6), one Li(7), one Fe(2), and one Fe(3) atom to form distorted OLi2Fe2 trigonal pyramids that share  a cornercorner with one O(2)Li3Nb tetrahedra, corners with three equivalent O(5)Li2Fe2 tetrahedra,  a cornercorner with one O(7)Li2NbFe trigonal pyramid,  a cornercorner with one O(8)Li2NbFe trigonal pyramid,  an edgeedge with one O(11)Li2NbFe tetrahedra, and  an edgeedge with one O(12)Li2NbFe tetrahedra. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(3), one Nb(2), and one Fe(1) atom. In the fifteenth O site, O(15) is bonded in a distorted rectangular see-saw-like geometry to one Li(2), one Nb(2), one Fe(2), and one Fe(3) atom. In the sixteenth O site, O(16) is bonded in a rectangular see-saw-like geometry to one Li(3), one Li(5), one Nb(2), and one Fe(1) atom.
Li7Nb2Fe3O16 is Spinel-derived structured and crystallizes in the triclinic P1 space group. There are seven inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(14), one O(2), one O(3), one O(4), one O(7), and one O(9) atom to form LiO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 55°. The Li(1)-O(14) bond length is 2.15 Å. The Li(1)-O(2) bond length is 2.11 Å. The Li(1)-O(3) bond length is 2.00 Å. The Li(1)-O(4) bond length is 2.02 Å. The Li(1)-O(7) bond length is 2.24 Å. The Li(1)-O(9) bond length is 2.18 Å. In the second Li site, Li(2) is bonded to one O(11), one O(12), one O(15), and one O(3) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Li(6)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, and corners with three equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-69°. The Li(2)-O(11) bond length is 1.98 Å. The Li(2)-O(12) bond length is 1.95 Å. The Li(2)-O(15) bond length is 2.08 Å. The Li(2)-O(3) bond length is 2.05 Å. In the third Li site, Li(3) is bonded to one O(14), one O(16), one O(5), and one O(9) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with three equivalent Nb(2)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(5)O6 octahedra, and  an edgeedge with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-68°. The Li(3)-O(14) bond length is 1.94 Å. The Li(3)-O(16) bond length is 1.96 Å. The Li(3)-O(5) bond length is 1.86 Å. The Li(3)-O(9) bond length is 1.90 Å. In the fourth Li site, Li(4) is bonded in a rectangular see-saw-like geometry to one O(1), one O(10), one O(4), and one O(6) atom. The Li(4)-O(1) bond length is 1.97 Å. The Li(4)-O(10) bond length is 1.97 Å. The Li(4)-O(4) bond length is 1.84 Å. The Li(4)-O(6) bond length is 1.98 Å. In the fifth Li site, Li(5) is bonded to one O(16), one O(2), one O(3), one O(4), one O(8), and one O(9) atom to form LiO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 54-55°. The Li(5)-O(16) bond length is 2.13 Å. The Li(5)-O(2) bond length is 2.11 Å. The Li(5)-O(3) bond length is 2.01 Å. The Li(5)-O(4) bond length is 2.07 Å. The Li(5)-O(8) bond length is 2.22 Å. The Li(5)-O(9) bond length is 2.16 Å. In the sixth Li site, Li(6) is bonded to one O(1), one O(11), one O(12), one O(13), one O(5), and one O(6) atom to form LiO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(7)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-51°. The Li(6)-O(1) bond length is 2.11 Å. The Li(6)-O(11) bond length is 2.16 Å. The Li(6)-O(12) bond length is 2.14 Å. The Li(6)-O(13) bond length is 2.07 Å. The Li(6)-O(5) bond length is 2.06 Å. The Li(6)-O(6) bond length is 2.10 Å. In the seventh Li site, Li(7) is bonded to one O(13), one O(2), one O(7), and one O(8) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(5)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and corners with three equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-66°. The Li(7)-O(13) bond length is 2.14 Å. The Li(7)-O(2) bond length is 1.89 Å. The Li(7)-O(7) bond length is 1.98 Å. The Li(7)-O(8) bond length is 1.96 Å. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(10), one O(2), one O(6), one O(7), and one O(8) atom to form distorted NbO6 octahedra that share corners with two equivalent Li(6)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, corners with three equivalent Li(7)O4 tetrahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(5)O6 octahedra, and  an edgeedge with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. The Nb(1)-O(1) bond length is 1.93 Å. The Nb(1)-O(10) bond length is 2.33 Å. The Nb(1)-O(2) bond length is 1.85 Å. The Nb(1)-O(6) bond length is 1.96 Å. The Nb(1)-O(7) bond length is 2.13 Å. The Nb(1)-O(8) bond length is 2.16 Å. In the second Nb site, Nb(2) is bonded to one O(11), one O(12), one O(14), one O(15), one O(16), and one O(9) atom to form distorted NbO6 octahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(5)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with three equivalent Li(2)O4 tetrahedra, corners with three equivalent Li(3)O4 tetrahedra,  an edgeedge with one Li(6)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra, and  an edgeedge with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-55°. The Nb(2)-O(11) bond length is 2.16 Å. The Nb(2)-O(12) bond length is 2.13 Å. The Nb(2)-O(14) bond length is 1.96 Å. The Nb(2)-O(15) bond length is 2.25 Å. The Nb(2)-O(16) bond length is 1.95 Å. The Nb(2)-O(9) bond length is 1.83 Å. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(14), one O(16), one O(3), one O(4), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-50°. The Fe(1)-O(14) bond length is 2.01 Å. The Fe(1)-O(16) bond length is 2.02 Å. The Fe(1)-O(3) bond length is 1.81 Å. The Fe(1)-O(4) bond length is 1.82 Å. The Fe(1)-O(7) bond length is 1.91 Å. The Fe(1)-O(8) bond length is 1.89 Å. In the second Fe site, Fe(2) is bonded to one O(1), one O(10), one O(11), one O(13), one O(15), and one O(5) atom to form FeO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(7)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Li(6)O6 octahedra, and edges with two equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-53°. The Fe(2)-O(1) bond length is 2.08 Å. The Fe(2)-O(10) bond length is 1.91 Å. The Fe(2)-O(11) bond length is 1.85 Å. The Fe(2)-O(13) bond length is 1.89 Å. The Fe(2)-O(15) bond length is 1.94 Å. The Fe(2)-O(5) bond length is 1.88 Å. In the third Fe site, Fe(3) is bonded to one O(10), one O(12), one O(13), one O(15), one O(5), and one O(6) atom to form FeO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(7)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Li(6)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-55°. The Fe(3)-O(10) bond length is 2.13 Å. The Fe(3)-O(12) bond length is 1.85 Å. The Fe(3)-O(13) bond length is 1.91 Å. The Fe(3)-O(15) bond length is 2.13 Å. The Fe(3)-O(5) bond length is 1.91 Å. The Fe(3)-O(6) bond length is 1.98 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Li(4), one Li(6), one Nb(1), and one Fe(2) atom. In the second O site, O(2) is bonded to one Li(1), one Li(5), one Li(7), and one Nb(1) atom to form distorted OLi3Nb tetrahedra that share corners with two equivalent O(4)Li3Fe tetrahedra,  a cornercorner with one O(13)Li2Fe2 trigonal pyramid,  a cornercorner with one O(7)Li2NbFe trigonal pyramid,  a cornercorner with one O(8)Li2NbFe trigonal pyramid,  an edgeedge with one O(7)Li2NbFe trigonal pyramid, and  an edgeedge with one O(8)Li2NbFe trigonal pyramid. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(2), one Li(5), and one Fe(1) atom. In the fourth O site, O(4) is bonded to one Li(1), one Li(4), one Li(5), and one Fe(1) atom to form OLi3Fe tetrahedra that share corners with two equivalent O(2)Li3Nb tetrahedra, corners with two equivalent O(7)Li2NbFe trigonal pyramids, and corners with two equivalent O(8)Li2NbFe trigonal pyramids. In the fifth O site, O(5) is bonded to one Li(3), one Li(6), one Fe(2), and one Fe(3) atom to form OLi2Fe2 tetrahedra that share corners with two equivalent O(11)Li2NbFe tetrahedra, corners with two equivalent O(12)Li2NbFe tetrahedra, and corners with three equivalent O(13)Li2Fe2 trigonal pyramids. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Li(4), one Li(6), one Nb(1), and one Fe(3) atom. In the seventh O site, O(7) is bonded to one Li(1), one Li(7), one Nb(1), and one Fe(1) atom to form distorted OLi2NbFe trigonal pyramids that share  a cornercorner with one O(2)Li3Nb tetrahedra, corners with two equivalent O(4)Li3Fe tetrahedra,  a cornercorner with one O(13)Li2Fe2 trigonal pyramid,  a cornercorner with one O(8)Li2NbFe trigonal pyramid,  an edgeedge with one O(2)Li3Nb tetrahedra, and  an edgeedge with one O(8)Li2NbFe trigonal pyramid. In the eighth O site, O(8) is bonded to one Li(5), one Li(7), one Nb(1), and one Fe(1) atom to form distorted OLi2NbFe trigonal pyramids that share  a cornercorner with one O(2)Li3Nb tetrahedra, corners with two equivalent O(4)Li3Fe tetrahedra,  a cornercorner with one O(13)Li2Fe2 trigonal pyramid,  a cornercorner with one O(7)Li2NbFe trigonal pyramid,  an edgeedge with one O(2)Li3Nb tetrahedra, and  an edgeedge with one O(7)Li2NbFe trigonal pyramid. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(3), one Li(5), and one Nb(2) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Li(4), one Nb(1), one Fe(2), and one Fe(3) atom. In the eleventh O site, O(11) is bonded to one Li(2), one Li(6), one Nb(2), and one Fe(2) atom to form distorted OLi2NbFe tetrahedra that share  a cornercorner with one O(12)Li2NbFe tetrahedra, corners with two equivalent O(5)Li2Fe2 tetrahedra,  an edgeedge with one O(12)Li2NbFe tetrahedra, and  an edgeedge with one O(13)Li2Fe2 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Li(2), one Li(6), one Nb(2), and one Fe(3) atom to form distorted OLi2NbFe tetrahedra that share  a cornercorner with one O(11)Li2NbFe tetrahedra, corners with two equivalent O(5)Li2Fe2 tetrahedra,  an edgeedge with one O(11)Li2NbFe tetrahedra, and  an edgeedge with one O(13)Li2Fe2 trigonal pyramid. In the thirteenth O site, O(13) is bonded to one Li(6), one Li(7), one Fe(2), and one Fe(3) atom to form distorted OLi2Fe2 trigonal pyramids that share  a cornercorner with one O(2)Li3Nb tetrahedra, corners with three equivalent O(5)Li2Fe2 tetrahedra,  a cornercorner with one O(7)Li2NbFe trigonal pyramid,  a cornercorner with one O(8)Li2NbFe trigonal pyramid,  an edgeedge with one O(11)Li2NbFe tetrahedra, and  an edgeedge with one O(12)Li2NbFe tetrahedra. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(3), one Nb(2), and one Fe(1) atom. In the fifteenth O site, O(15) is bonded in a distorted rectangular see-saw-like geometry to one Li(2), one Nb(2), one Fe(2), and one Fe(3) atom. In the sixteenth O site, O(16) is bonded in a rectangular see-saw-like geometry to one Li(3), one Li(5), one Nb(2), and one Fe(1) atom.