Na2LiFeCPO7 crystallizes in the triclinic P1 space group. There are eight inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(23), one O(26), one O(7), and one O(8) atom. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(12), one O(4), one O(5), one O(7), and one O(9) atom. In the third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(13), one O(14), one O(2), one O(3), one O(6), one O(7), and one O(9) atom. In the fourth Na site, Na(4) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(14), one O(2), one O(3), one O(6), and one O(8) atom. In the fifth Na site, Na(5) is bonded in a 7-coordinate geometry to one O(15), one O(16), one O(19), one O(21), one O(23), one O(26), and one O(27) atom. In the sixth Na site, Na(6) is bonded in a 7-coordinate geometry to one O(15), one O(16), one O(20), one O(22), one O(23), one O(26), and one O(27) atom. In the seventh Na site, Na(7) is bonded in a 7-coordinate geometry to one O(17), one O(18), one O(19), one O(21), one O(24), one O(25), and one O(28) atom. In the eighth Na site, Na(8) is bonded in a 7-coordinate geometry to one O(17), one O(18), one O(20), one O(22), one O(24), one O(25), and one O(28) atom. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(10), one O(2), one O(24), one O(25), and one O(9) atom. In the second Li site, Li(2) is bonded to one O(1), one O(10), one O(11), one O(12), and one O(5) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and  an edgeedge with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 62-88°. In the third Li site, Li(3) is bonded in a 4-coordinate geometry to one O(19), one O(20), one O(27), and one O(4) atom. In the fourth Li site, Li(4) is bonded in a 4-coordinate geometry to one O(21), one O(22), one O(28), and one O(3) atom. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(14), one O(16), one O(3), one O(5), one O(7), and one O(8) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and  a cornercorner with one Li(2)O5 trigonal bipyramid. In the second Fe site, Fe(2) is bonded to one O(10), one O(12), one O(18), one O(4), one O(6), and one O(9) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one Li(2)O5 trigonal bipyramid. In the third Fe site, Fe(3) is bonded to one O(11), one O(17), one O(19), one O(20), one O(23), and one O(25) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  a cornercorner with one Li(2)O5 trigonal bipyramid. In the fourth Fe site, Fe(4) is bonded to one O(13), one O(15), one O(21), one O(22), one O(24), and one O(26) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(27), one O(3), and one O(5) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(28), one O(4), and one O(6) atom. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(1), one O(23), and one O(25) atom. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one O(2), one O(24), and one O(26) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(15), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-61°. In the second P site, P(2) is bonded to one O(10), one O(13), one O(17), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and  a cornercorner with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 41-55°. In the third P site, P(3) is bonded to one O(12), one O(16), one O(19), and one O(20) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, and  a cornercorner with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 43-58°. In the fourth P site, P(4) is bonded to one O(14), one O(18), one O(21), and one O(22) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, and corners with two equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-54°. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Li(2), and one C(3) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(1), one Na(3), one Na(4), one Li(1), and one C(4) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(3), one Na(4), one Li(4), one Fe(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(2), one Li(3), one Fe(2), and one C(2) atom. In the fifth O site, O(5) is bonded in a 1-coordinate geometry to one Na(2), one Li(2), one Fe(1), and one C(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(3), one Na(4), one Fe(2), and one C(2) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(3), one Fe(1), and one P(1) atom. In the eighth O site, O(8) is bonded to one Na(1), one Na(4), one Fe(1), and one P(1) atom to form distorted ONa2FeP trigonal pyramids that share  a cornercorner with one O(13)Na2FeP tetrahedra,  a cornercorner with one O(16)Na2FeP tetrahedra,  a cornercorner with one O(11)NaLiFeP tetrahedra, and  a cornercorner with one O(23)Na3FeC trigonal bipyramid. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Na(2), one Na(3), one Li(1), one Fe(2), and one P(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Na(4), one Li(1), one Li(2), one Fe(2), and one P(2) atom. In the eleventh O site, O(11) is bonded to one Na(2), one Li(2), one Fe(3), and one P(1) atom to form distorted ONaLiFeP tetrahedra that share  a cornercorner with one O(23)Na3FeC trigonal bipyramid and  a cornercorner with one O(8)Na2FeP trigonal pyramid. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Li(2), one Fe(2), and one P(3) atom. In the thirteenth O site, O(13) is bonded to one Na(3), one Na(4), one Fe(4), and one P(2) atom to form distorted corner-sharing ONa2FeP tetrahedra. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Na(3), one Na(4), one Fe(1), and one P(4) atom. In the fifteenth O site, O(15) is bonded in a distorted rectangular see-saw-like geometry to one Na(5), one Na(6), one Fe(4), and one P(1) atom. In the sixteenth O site, O(16) is bonded to one Na(5), one Na(6), one Fe(1), and one P(3) atom to form distorted ONa2FeP tetrahedra that share corners with two equivalent O(23)Na3FeC trigonal bipyramids,  a cornercorner with one O(8)Na2FeP trigonal pyramid, and  an edgeedge with one O(27)Na2LiC tetrahedra. In the seventeenth O site, O(17) is bonded in a rectangular see-saw-like geometry to one Na(7), one Na(8), one Fe(3), and one P(2) atom. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one Na(7), one Na(8), one Fe(2), and one P(4) atom. In the nineteenth O site, O(19) is bonded in a 5-coordinate geometry to one Na(5), one Na(7), one Li(3), one Fe(3), and one P(3) atom. In the twentieth O site, O(20) is bonded in a 5-coordinate geometry to one Na(6), one Na(8), one Li(3), one Fe(3), and one P(3) atom. In the twenty-first O site, O(21) is bonded in a 5-coordinate geometry to one Na(5), one Na(7), one Li(4), one Fe(4), and one P(4) atom. In the twenty-second O site, O(22) is bonded in a 5-coordinate geometry to one Na(6), one Na(8), one Li(4), one Fe(4), and one P(4) atom. In the twenty-third O site, O(23) is bonded to one Na(1), one Na(5), one Na(6), one Fe(3), and one C(3) atom to form distorted ONa3FeC trigonal bipyramids that share  a cornercorner with one O(11)NaLiFeP tetrahedra, corners with two equivalent O(16)Na2FeP tetrahedra, corners with two equivalent O(27)Na2LiC tetrahedra, and  a cornercorner with one O(8)Na2FeP trigonal pyramid. In the twenty-fourth O site, O(24) is bonded in a 5-coordinate geometry to one Na(7), one Na(8), one Li(1), one Fe(4), and one C(4) atom. In the twenty-fifth O site, O(25) is bonded in a 5-coordinate geometry to one Na(7), one Na(8), one Li(1), one Fe(3), and one C(3) atom. In the twenty-sixth O site, O(26) is bonded in a 5-coordinate geometry to one Na(1), one Na(5), one Na(6), one Fe(4), and one C(4) atom. In the twenty-seventh O site, O(27) is bonded to one Na(5), one Na(6), one Li(3), and one C(1) atom to form distorted ONa2LiC tetrahedra that share corners with two equivalent O(23)Na3FeC trigonal bipyramids and  an edgeedge with one O(16)Na2FeP tetrahedra. In the twenty-eighth O site, O(28) is bonded in a distorted tetrahedral geometry to one Na(7), one Na(8), one Li(4), and one C(2) atom.
Na2LiFeCPO7 crystallizes in the triclinic P1 space group. There are eight inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(23), one O(26), one O(7), and one O(8) atom. The Na(1)-O(1) bond length is 2.36 Å. The Na(1)-O(2) bond length is 2.86 Å. The Na(1)-O(23) bond length is 2.57 Å. The Na(1)-O(26) bond length is 2.25 Å. The Na(1)-O(7) bond length is 2.42 Å. The Na(1)-O(8) bond length is 2.39 Å. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(12), one O(4), one O(5), one O(7), and one O(9) atom. The Na(2)-O(1) bond length is 2.36 Å. The Na(2)-O(11) bond length is 2.45 Å. The Na(2)-O(12) bond length is 2.41 Å. The Na(2)-O(4) bond length is 2.69 Å. The Na(2)-O(5) bond length is 2.40 Å. The Na(2)-O(7) bond length is 2.79 Å. The Na(2)-O(9) bond length is 2.43 Å. In the third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(13), one O(14), one O(2), one O(3), one O(6), one O(7), and one O(9) atom. The Na(3)-O(13) bond length is 2.45 Å. The Na(3)-O(14) bond length is 2.33 Å. The Na(3)-O(2) bond length is 2.29 Å. The Na(3)-O(3) bond length is 2.72 Å. The Na(3)-O(6) bond length is 2.42 Å. The Na(3)-O(7) bond length is 2.48 Å. The Na(3)-O(9) bond length is 2.81 Å. In the fourth Na site, Na(4) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(14), one O(2), one O(3), one O(6), and one O(8) atom. The Na(4)-O(10) bond length is 2.90 Å. The Na(4)-O(13) bond length is 2.41 Å. The Na(4)-O(14) bond length is 2.34 Å. The Na(4)-O(2) bond length is 2.30 Å. The Na(4)-O(3) bond length is 2.70 Å. The Na(4)-O(6) bond length is 2.40 Å. The Na(4)-O(8) bond length is 2.41 Å. In the fifth Na site, Na(5) is bonded in a 7-coordinate geometry to one O(15), one O(16), one O(19), one O(21), one O(23), one O(26), and one O(27) atom. The Na(5)-O(15) bond length is 2.31 Å. The Na(5)-O(16) bond length is 2.38 Å. The Na(5)-O(19) bond length is 2.79 Å. The Na(5)-O(21) bond length is 2.47 Å. The Na(5)-O(23) bond length is 2.49 Å. The Na(5)-O(26) bond length is 2.64 Å. The Na(5)-O(27) bond length is 2.28 Å. In the sixth Na site, Na(6) is bonded in a 7-coordinate geometry to one O(15), one O(16), one O(20), one O(22), one O(23), one O(26), and one O(27) atom. The Na(6)-O(15) bond length is 2.31 Å. The Na(6)-O(16) bond length is 2.41 Å. The Na(6)-O(20) bond length is 2.84 Å. The Na(6)-O(22) bond length is 2.45 Å. The Na(6)-O(23) bond length is 2.47 Å. The Na(6)-O(26) bond length is 2.67 Å. The Na(6)-O(27) bond length is 2.28 Å. In the seventh Na site, Na(7) is bonded in a 7-coordinate geometry to one O(17), one O(18), one O(19), one O(21), one O(24), one O(25), and one O(28) atom. The Na(7)-O(17) bond length is 2.33 Å. The Na(7)-O(18) bond length is 2.44 Å. The Na(7)-O(19) bond length is 2.43 Å. The Na(7)-O(21) bond length is 2.81 Å. The Na(7)-O(24) bond length is 2.38 Å. The Na(7)-O(25) bond length is 2.64 Å. The Na(7)-O(28) bond length is 2.29 Å. In the eighth Na site, Na(8) is bonded in a 7-coordinate geometry to one O(17), one O(18), one O(20), one O(22), one O(24), one O(25), and one O(28) atom. The Na(8)-O(17) bond length is 2.35 Å. The Na(8)-O(18) bond length is 2.43 Å. The Na(8)-O(20) bond length is 2.40 Å. The Na(8)-O(22) bond length is 2.82 Å. The Na(8)-O(24) bond length is 2.37 Å. The Na(8)-O(25) bond length is 2.64 Å. The Na(8)-O(28) bond length is 2.30 Å. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(10), one O(2), one O(24), one O(25), and one O(9) atom. The Li(1)-O(10) bond length is 2.27 Å. The Li(1)-O(2) bond length is 2.24 Å. The Li(1)-O(24) bond length is 2.55 Å. The Li(1)-O(25) bond length is 2.07 Å. The Li(1)-O(9) bond length is 2.35 Å. In the second Li site, Li(2) is bonded to one O(1), one O(10), one O(11), one O(12), and one O(5) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and  an edgeedge with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 62-88°. The Li(2)-O(1) bond length is 2.08 Å. The Li(2)-O(10) bond length is 2.25 Å. The Li(2)-O(11) bond length is 2.19 Å. The Li(2)-O(12) bond length is 2.21 Å. The Li(2)-O(5) bond length is 2.57 Å. In the third Li site, Li(3) is bonded in a 4-coordinate geometry to one O(19), one O(20), one O(27), and one O(4) atom. The Li(3)-O(19) bond length is 2.20 Å. The Li(3)-O(20) bond length is 2.37 Å. The Li(3)-O(27) bond length is 2.11 Å. The Li(3)-O(4) bond length is 2.11 Å. In the fourth Li site, Li(4) is bonded in a 4-coordinate geometry to one O(21), one O(22), one O(28), and one O(3) atom. The Li(4)-O(21) bond length is 2.30 Å. The Li(4)-O(22) bond length is 2.31 Å. The Li(4)-O(28) bond length is 2.10 Å. The Li(4)-O(3) bond length is 2.12 Å. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(14), one O(16), one O(3), one O(5), one O(7), and one O(8) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and  a cornercorner with one Li(2)O5 trigonal bipyramid. The Fe(1)-O(14) bond length is 2.11 Å. The Fe(1)-O(16) bond length is 2.07 Å. The Fe(1)-O(3) bond length is 2.49 Å. The Fe(1)-O(5) bond length is 2.13 Å. The Fe(1)-O(7) bond length is 2.17 Å. The Fe(1)-O(8) bond length is 2.13 Å. In the second Fe site, Fe(2) is bonded to one O(10), one O(12), one O(18), one O(4), one O(6), and one O(9) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one Li(2)O5 trigonal bipyramid. The Fe(2)-O(10) bond length is 2.17 Å. The Fe(2)-O(12) bond length is 2.13 Å. The Fe(2)-O(18) bond length is 2.10 Å. The Fe(2)-O(4) bond length is 2.41 Å. The Fe(2)-O(6) bond length is 2.17 Å. The Fe(2)-O(9) bond length is 2.15 Å. In the third Fe site, Fe(3) is bonded to one O(11), one O(17), one O(19), one O(20), one O(23), and one O(25) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  a cornercorner with one Li(2)O5 trigonal bipyramid. The Fe(3)-O(11) bond length is 2.08 Å. The Fe(3)-O(17) bond length is 2.11 Å. The Fe(3)-O(19) bond length is 2.18 Å. The Fe(3)-O(20) bond length is 2.16 Å. The Fe(3)-O(23) bond length is 2.20 Å. The Fe(3)-O(25) bond length is 2.47 Å. In the fourth Fe site, Fe(4) is bonded to one O(13), one O(15), one O(21), one O(22), one O(24), and one O(26) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. The Fe(4)-O(13) bond length is 2.11 Å. The Fe(4)-O(15) bond length is 2.17 Å. The Fe(4)-O(21) bond length is 2.16 Å. The Fe(4)-O(22) bond length is 2.16 Å. The Fe(4)-O(24) bond length is 2.25 Å. The Fe(4)-O(26) bond length is 2.24 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(27), one O(3), and one O(5) atom. The C(1)-O(27) bond length is 1.30 Å. The C(1)-O(3) bond length is 1.30 Å. The C(1)-O(5) bond length is 1.30 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(28), one O(4), and one O(6) atom. The C(2)-O(28) bond length is 1.29 Å. The C(2)-O(4) bond length is 1.30 Å. The C(2)-O(6) bond length is 1.31 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(1), one O(23), and one O(25) atom. The C(3)-O(1) bond length is 1.29 Å. The C(3)-O(23) bond length is 1.31 Å. The C(3)-O(25) bond length is 1.30 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one O(2), one O(24), and one O(26) atom. The C(4)-O(2) bond length is 1.29 Å. The C(4)-O(24) bond length is 1.30 Å. The C(4)-O(26) bond length is 1.31 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(15), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-61°. The P(1)-O(11) bond length is 1.57 Å. The P(1)-O(15) bond length is 1.55 Å. The P(1)-O(7) bond length is 1.56 Å. The P(1)-O(8) bond length is 1.55 Å. In the second P site, P(2) is bonded to one O(10), one O(13), one O(17), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and  a cornercorner with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 41-55°. The P(2)-O(10) bond length is 1.57 Å. The P(2)-O(13) bond length is 1.56 Å. The P(2)-O(17) bond length is 1.55 Å. The P(2)-O(9) bond length is 1.56 Å. In the third P site, P(3) is bonded to one O(12), one O(16), one O(19), and one O(20) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, and  a cornercorner with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 43-58°. The P(3)-O(12) bond length is 1.56 Å. The P(3)-O(16) bond length is 1.56 Å. The P(3)-O(19) bond length is 1.56 Å. The P(3)-O(20) bond length is 1.56 Å. In the fourth P site, P(4) is bonded to one O(14), one O(18), one O(21), and one O(22) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, and corners with two equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-54°. The P(4)-O(14) bond length is 1.54 Å. The P(4)-O(18) bond length is 1.56 Å. The P(4)-O(21) bond length is 1.57 Å. The P(4)-O(22) bond length is 1.57 Å. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Li(2), and one C(3) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(1), one Na(3), one Na(4), one Li(1), and one C(4) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(3), one Na(4), one Li(4), one Fe(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(2), one Li(3), one Fe(2), and one C(2) atom. In the fifth O site, O(5) is bonded in a 1-coordinate geometry to one Na(2), one Li(2), one Fe(1), and one C(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(3), one Na(4), one Fe(2), and one C(2) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(3), one Fe(1), and one P(1) atom. In the eighth O site, O(8) is bonded to one Na(1), one Na(4), one Fe(1), and one P(1) atom to form distorted ONa2FeP trigonal pyramids that share  a cornercorner with one O(13)Na2FeP tetrahedra,  a cornercorner with one O(16)Na2FeP tetrahedra,  a cornercorner with one O(11)NaLiFeP tetrahedra, and  a cornercorner with one O(23)Na3FeC trigonal bipyramid. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Na(2), one Na(3), one Li(1), one Fe(2), and one P(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Na(4), one Li(1), one Li(2), one Fe(2), and one P(2) atom. In the eleventh O site, O(11) is bonded to one Na(2), one Li(2), one Fe(3), and one P(1) atom to form distorted ONaLiFeP tetrahedra that share  a cornercorner with one O(23)Na3FeC trigonal bipyramid and  a cornercorner with one O(8)Na2FeP trigonal pyramid. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Li(2), one Fe(2), and one P(3) atom. In the thirteenth O site, O(13) is bonded to one Na(3), one Na(4), one Fe(4), and one P(2) atom to form distorted corner-sharing ONa2FeP tetrahedra. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Na(3), one Na(4), one Fe(1), and one P(4) atom. In the fifteenth O site, O(15) is bonded in a distorted rectangular see-saw-like geometry to one Na(5), one Na(6), one Fe(4), and one P(1) atom. In the sixteenth O site, O(16) is bonded to one Na(5), one Na(6), one Fe(1), and one P(3) atom to form distorted ONa2FeP tetrahedra that share corners with two equivalent O(23)Na3FeC trigonal bipyramids,  a cornercorner with one O(8)Na2FeP trigonal pyramid, and  an edgeedge with one O(27)Na2LiC tetrahedra. In the seventeenth O site, O(17) is bonded in a rectangular see-saw-like geometry to one Na(7), one Na(8), one Fe(3), and one P(2) atom. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one Na(7), one Na(8), one Fe(2), and one P(4) atom. In the nineteenth O site, O(19) is bonded in a 5-coordinate geometry to one Na(5), one Na(7), one Li(3), one Fe(3), and one P(3) atom. In the twentieth O site, O(20) is bonded in a 5-coordinate geometry to one Na(6), one Na(8), one Li(3), one Fe(3), and one P(3) atom. In the twenty-first O site, O(21) is bonded in a 5-coordinate geometry to one Na(5), one Na(7), one Li(4), one Fe(4), and one P(4) atom. In the twenty-second O site, O(22) is bonded in a 5-coordinate geometry to one Na(6), one Na(8), one Li(4), one Fe(4), and one P(4) atom. In the twenty-third O site, O(23) is bonded to one Na(1), one Na(5), one Na(6), one Fe(3), and one C(3) atom to form distorted ONa3FeC trigonal bipyramids that share  a cornercorner with one O(11)NaLiFeP tetrahedra, corners with two equivalent O(16)Na2FeP tetrahedra, corners with two equivalent O(27)Na2LiC tetrahedra, and  a cornercorner with one O(8)Na2FeP trigonal pyramid. In the twenty-fourth O site, O(24) is bonded in a 5-coordinate geometry to one Na(7), one Na(8), one Li(1), one Fe(4), and one C(4) atom. In the twenty-fifth O site, O(25) is bonded in a 5-coordinate geometry to one Na(7), one Na(8), one Li(1), one Fe(3), and one C(3) atom. In the twenty-sixth O site, O(26) is bonded in a 5-coordinate geometry to one Na(1), one Na(5), one Na(6), one Fe(4), and one C(4) atom. In the twenty-seventh O site, O(27) is bonded to one Na(5), one Na(6), one Li(3), and one C(1) atom to form distorted ONa2LiC tetrahedra that share corners with two equivalent O(23)Na3FeC trigonal bipyramids and  an edgeedge with one O(16)Na2FeP tetrahedra. In the twenty-eighth O site, O(28) is bonded in a distorted tetrahedral geometry to one Na(7), one Na(8), one Li(4), and one C(2) atom.