Na5LiFe2P2(CO7)2 crystallizes in the triclinic P1 space group. There are ten 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 6-coordinate geometry to one O(1), one O(10), one O(2), one O(24), one O(25), and one O(9) atom. In the third Na site, Na(3) 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 fourth Na site, Na(4) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(4), one O(5), and one O(8) atom. In the fifth Na site, Na(5) 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 sixth Na site, Na(6) 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 seventh Na site, Na(7) 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 eighth Na site, Na(8) is bonded in a 6-coordinate geometry to one O(15), one O(16), one O(22), one O(23), one O(26), and one O(27) atom. In the ninth Na site, Na(9) 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 tenth Na site, Na(10) is bonded in a 5-coordinate geometry to one O(21), one O(22), one O(28), one O(3), and one O(6) atom. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted see-saw-like geometry to one O(17), one O(18), one O(20), and one O(28) atom. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to one O(19), one O(20), one O(27), and one O(4) 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, and corners with two equivalent P(1)O4 tetrahedra. In the second Fe site, Fe(2) is bonded in a 5-coordinate geometry to one O(10), one O(12), one O(18), one O(6), and one O(9) atom. 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, and corners with two equivalent P(3)O4 tetrahedra. 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, and corners with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-54°. 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 and  a cornercorner with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-59°. 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 and corners with two equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-53°. 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 and corners with two equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-49°. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), and one C(3) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(5), one Na(6), and one C(4) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(10), one Na(5), one Na(6), one Fe(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Na(3), one Na(4), one Li(2), and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Na(3), one Na(4), one Fe(1), and one C(1) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Na(10), one Na(5), one Na(6), one Fe(2), and one C(2) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Na(1), one Na(3), one Na(5), one Fe(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Na(1), one Na(4), one Na(6), one Fe(1), and one P(1) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Na(2), one Na(3), one Na(5), one Fe(2), and one P(2) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Na(2), one Na(4), one Na(6), one Fe(2), and one P(2) atom. In the eleventh O site, O(11) is bonded to one Na(3), one Na(4), one Fe(3), and one P(1) atom to form distorted corner-sharing ONa2FeP tetrahedra. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to one Na(3), one Na(4), one Fe(2), and one P(3) atom. In the thirteenth O site, O(13) is bonded to one Na(5), one Na(6), 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 distorted rectangular see-saw-like geometry to one Na(5), one Na(6), one Fe(1), and one P(4) atom. In the fifteenth O site, O(15) is bonded in a rectangular see-saw-like geometry to one Na(7), one Na(8), one Fe(4), and one P(1) atom. In the sixteenth O site, O(16) is bonded to one Na(7), one Na(8), one Fe(1), and one P(3) atom to form distorted ONa2FeP tetrahedra that share corners with two equivalent O(23)Na3FeC trigonal bipyramids and  a cornercorner with one O(22)Na2FeP trigonal pyramid. In the seventeenth O site, O(17) is bonded in a distorted rectangular see-saw-like geometry to one Na(9), one Li(1), one Fe(3), and one P(2) atom. In the eighteenth O site, O(18) is bonded to one Na(9), one Li(1), one Fe(2), and one P(4) atom to form distorted corner-sharing ONaLiFeP tetrahedra. In the nineteenth O site, O(19) is bonded in a 5-coordinate geometry to one Na(7), one Na(9), one Li(2), one Fe(3), and one P(3) atom. In the twentieth O site, O(20) is bonded in a 4-coordinate geometry to one Li(1), one Li(2), 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(10), one Na(7), one Na(9), one Fe(4), and one P(4) atom. In the twenty-second O site, O(22) is bonded to one Na(10), one Na(8), one Fe(4), and one P(4) 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(18)NaLiFeP tetrahedra, and  a cornercorner with one O(23)Na3FeC trigonal bipyramid. In the twenty-third O site, O(23) is bonded to one Na(1), one Na(7), one Na(8), one Fe(3), and one C(3) atom to form distorted corner-sharing ONa3FeC trigonal bipyramids. In the twenty-fourth O site, O(24) is bonded in a 1-coordinate geometry to one Na(2), one Na(9), one Fe(4), and one C(4) atom. In the twenty-fifth O site, O(25) is bonded in a 4-coordinate geometry to one Na(2), one Na(9), 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(7), one Na(8), one Fe(4), and one C(4) atom. In the twenty-seventh O site, O(27) is bonded in a distorted rectangular see-saw-like geometry to one Na(7), one Na(8), one Li(2), and one C(1) atom. In the twenty-eighth O site, O(28) is bonded in a distorted rectangular see-saw-like geometry to one Na(10), one Na(9), one Li(1), and one C(2) atom.
Na5LiFe2P2(CO7)2 crystallizes in the triclinic P1 space group. There are ten 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 2.43 Å. The Na(1)-O(2) bond length is 2.76 Å. The Na(1)-O(23) bond length is 2.52 Å. The Na(1)-O(26) bond length is 2.33 Å. The Na(1)-O(7) bond length is 2.46 Å. The Na(1)-O(8) bond length is 2.47 Å. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(2), one O(24), one O(25), and one O(9) atom. The Na(2)-O(1) bond length is 2.73 Å. The Na(2)-O(10) bond length is 2.55 Å. The Na(2)-O(2) bond length is 2.44 Å. The Na(2)-O(24) bond length is 2.56 Å. The Na(2)-O(25) bond length is 2.29 Å. The Na(2)-O(9) bond length is 2.41 Å. In the third Na site, Na(3) 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(3)-O(1) bond length is 2.31 Å. The Na(3)-O(11) bond length is 2.46 Å. The Na(3)-O(12) bond length is 2.34 Å. The Na(3)-O(4) bond length is 2.69 Å. The Na(3)-O(5) bond length is 2.39 Å. The Na(3)-O(7) bond length is 2.89 Å. The Na(3)-O(9) bond length is 2.47 Å. In the fourth Na site, Na(4) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(4), one O(5), and one O(8) atom. The Na(4)-O(1) bond length is 2.31 Å. The Na(4)-O(10) bond length is 2.46 Å. The Na(4)-O(11) bond length is 2.46 Å. The Na(4)-O(12) bond length is 2.36 Å. The Na(4)-O(4) bond length is 2.67 Å. The Na(4)-O(5) bond length is 2.41 Å. The Na(4)-O(8) bond length is 2.87 Å. In the fifth Na site, Na(5) 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(5)-O(13) bond length is 2.40 Å. The Na(5)-O(14) bond length is 2.32 Å. The Na(5)-O(2) bond length is 2.31 Å. The Na(5)-O(3) bond length is 2.71 Å. The Na(5)-O(6) bond length is 2.57 Å. The Na(5)-O(7) bond length is 2.49 Å. The Na(5)-O(9) bond length is 2.82 Å. In the sixth Na site, Na(6) 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(6)-O(10) bond length is 2.90 Å. The Na(6)-O(13) bond length is 2.41 Å. The Na(6)-O(14) bond length is 2.31 Å. The Na(6)-O(2) bond length is 2.30 Å. The Na(6)-O(3) bond length is 2.72 Å. The Na(6)-O(6) bond length is 2.56 Å. The Na(6)-O(8) bond length is 2.50 Å. In the seventh Na site, Na(7) 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(7)-O(15) bond length is 2.31 Å. The Na(7)-O(16) bond length is 2.46 Å. The Na(7)-O(19) bond length is 2.86 Å. The Na(7)-O(21) bond length is 2.55 Å. The Na(7)-O(23) bond length is 2.49 Å. The Na(7)-O(26) bond length is 2.61 Å. The Na(7)-O(27) bond length is 2.36 Å. In the eighth Na site, Na(8) is bonded in a 6-coordinate geometry to one O(15), one O(16), one O(22), one O(23), one O(26), and one O(27) atom. The Na(8)-O(15) bond length is 2.32 Å. The Na(8)-O(16) bond length is 2.42 Å. The Na(8)-O(22) bond length is 2.40 Å. The Na(8)-O(23) bond length is 2.41 Å. The Na(8)-O(26) bond length is 2.64 Å. The Na(8)-O(27) bond length is 2.37 Å. In the ninth Na site, Na(9) 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(9)-O(17) bond length is 2.40 Å. The Na(9)-O(18) bond length is 2.48 Å. The Na(9)-O(19) bond length is 2.48 Å. The Na(9)-O(21) bond length is 2.77 Å. The Na(9)-O(24) bond length is 2.43 Å. The Na(9)-O(25) bond length is 2.61 Å. The Na(9)-O(28) bond length is 2.40 Å. In the tenth Na site, Na(10) is bonded in a 5-coordinate geometry to one O(21), one O(22), one O(28), one O(3), and one O(6) atom. The Na(10)-O(21) bond length is 2.45 Å. The Na(10)-O(22) bond length is 2.40 Å. The Na(10)-O(28) bond length is 2.35 Å. The Na(10)-O(3) bond length is 2.30 Å. The Na(10)-O(6) bond length is 2.65 Å. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted see-saw-like geometry to one O(17), one O(18), one O(20), and one O(28) atom. The Li(1)-O(17) bond length is 2.15 Å. The Li(1)-O(18) bond length is 2.12 Å. The Li(1)-O(20) bond length is 2.22 Å. The Li(1)-O(28) bond length is 2.14 Å. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to one O(19), one O(20), one O(27), and one O(4) atom. The Li(2)-O(19) bond length is 2.36 Å. The Li(2)-O(20) bond length is 2.23 Å. The Li(2)-O(27) bond length is 2.15 Å. The Li(2)-O(4) bond length is 2.10 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, and corners with two equivalent P(1)O4 tetrahedra. The Fe(1)-O(14) bond length is 2.18 Å. The Fe(1)-O(16) bond length is 2.13 Å. The Fe(1)-O(3) bond length is 2.32 Å. The Fe(1)-O(5) bond length is 2.21 Å. The Fe(1)-O(7) bond length is 2.14 Å. The Fe(1)-O(8) bond length is 2.14 Å. In the second Fe site, Fe(2) is bonded in a 5-coordinate geometry to one O(10), one O(12), one O(18), one O(6), and one O(9) atom. The Fe(2)-O(10) bond length is 2.15 Å. The Fe(2)-O(12) bond length is 2.11 Å. The Fe(2)-O(18) bond length is 2.10 Å. The Fe(2)-O(6) bond length is 2.18 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, and corners with two equivalent P(3)O4 tetrahedra. The Fe(3)-O(11) bond length is 2.11 Å. The Fe(3)-O(17) bond length is 2.16 Å. The Fe(3)-O(19) bond length is 2.15 Å. The Fe(3)-O(20) bond length is 2.18 Å. The Fe(3)-O(23) bond length is 2.29 Å. The Fe(3)-O(25) bond length is 2.20 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 2.06 Å. The Fe(4)-O(15) bond length is 2.15 Å. The Fe(4)-O(21) bond length is 2.18 Å. The Fe(4)-O(22) bond length is 2.15 Å. The Fe(4)-O(24) bond length is 2.25 Å. The Fe(4)-O(26) bond length is 2.27 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 1.31 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 1.32 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, and corners with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-54°. The P(1)-O(11) bond length is 1.57 Å. The P(1)-O(15) bond length is 1.54 Å. The P(1)-O(7) bond length is 1.57 Å. The P(1)-O(8) bond length is 1.57 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 and  a cornercorner with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-59°. The P(2)-O(10) bond length is 1.56 Å. The P(2)-O(13) bond length is 1.57 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 and corners with two equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-53°. The P(3)-O(12) bond length is 1.55 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 1.57 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 and corners with two equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-49°. The P(4)-O(14) bond length is 1.55 Å. The P(4)-O(18) bond length is 1.58 Å. The P(4)-O(21) bond length is 1.55 Å. The P(4)-O(22) bond length is 1.55 Å. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), and one C(3) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(5), one Na(6), and one C(4) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(10), one Na(5), one Na(6), one Fe(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Na(3), one Na(4), one Li(2), and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Na(3), one Na(4), one Fe(1), and one C(1) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Na(10), one Na(5), one Na(6), one Fe(2), and one C(2) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Na(1), one Na(3), one Na(5), one Fe(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Na(1), one Na(4), one Na(6), one Fe(1), and one P(1) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Na(2), one Na(3), one Na(5), one Fe(2), and one P(2) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Na(2), one Na(4), one Na(6), one Fe(2), and one P(2) atom. In the eleventh O site, O(11) is bonded to one Na(3), one Na(4), one Fe(3), and one P(1) atom to form distorted corner-sharing ONa2FeP tetrahedra. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to one Na(3), one Na(4), one Fe(2), and one P(3) atom. In the thirteenth O site, O(13) is bonded to one Na(5), one Na(6), 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 distorted rectangular see-saw-like geometry to one Na(5), one Na(6), one Fe(1), and one P(4) atom. In the fifteenth O site, O(15) is bonded in a rectangular see-saw-like geometry to one Na(7), one Na(8), one Fe(4), and one P(1) atom. In the sixteenth O site, O(16) is bonded to one Na(7), one Na(8), one Fe(1), and one P(3) atom to form distorted ONa2FeP tetrahedra that share corners with two equivalent O(23)Na3FeC trigonal bipyramids and  a cornercorner with one O(22)Na2FeP trigonal pyramid. In the seventeenth O site, O(17) is bonded in a distorted rectangular see-saw-like geometry to one Na(9), one Li(1), one Fe(3), and one P(2) atom. In the eighteenth O site, O(18) is bonded to one Na(9), one Li(1), one Fe(2), and one P(4) atom to form distorted corner-sharing ONaLiFeP tetrahedra. In the nineteenth O site, O(19) is bonded in a 5-coordinate geometry to one Na(7), one Na(9), one Li(2), one Fe(3), and one P(3) atom. In the twentieth O site, O(20) is bonded in a 4-coordinate geometry to one Li(1), one Li(2), 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(10), one Na(7), one Na(9), one Fe(4), and one P(4) atom. In the twenty-second O site, O(22) is bonded to one Na(10), one Na(8), one Fe(4), and one P(4) 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(18)NaLiFeP tetrahedra, and  a cornercorner with one O(23)Na3FeC trigonal bipyramid. In the twenty-third O site, O(23) is bonded to one Na(1), one Na(7), one Na(8), one Fe(3), and one C(3) atom to form distorted corner-sharing ONa3FeC trigonal bipyramids. In the twenty-fourth O site, O(24) is bonded in a 1-coordinate geometry to one Na(2), one Na(9), one Fe(4), and one C(4) atom. In the twenty-fifth O site, O(25) is bonded in a 4-coordinate geometry to one Na(2), one Na(9), 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(7), one Na(8), one Fe(4), and one C(4) atom. In the twenty-seventh O site, O(27) is bonded in a distorted rectangular see-saw-like geometry to one Na(7), one Na(8), one Li(2), and one C(1) atom. In the twenty-eighth O site, O(28) is bonded in a distorted rectangular see-saw-like geometry to one Na(10), one Na(9), one Li(1), and one C(2) atom.